Isotopes

Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.

4,177 Questions
Isotopes

Is lithium an isotope ion or neutral atom?

Lithium is two of these but at the same time neither. It's an element.

It is best described as an element, a type of atom with unique properties. If the number of neutrons varied, the multiple lithium atoms would be called isotopes. As for neutral vs. ion, if the number of protons is equal to the number of electrons, it is neutral. If it is not, it is an ion, specifically anion (less protons) or cation (more protons). It will always be a neutral atom or ion.

It will always be an isotope, but only called so when in a group of lithium atoms with various numbers of neutrons.

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Gold and Precious Metals
Isotopes

What is the common isotope of gold?

From the chart on the related link: 197Au is the most common, and should be pretty close to 100%, since the longest half-life of any of the others is 186 days.

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Isotopes

Does radioactive isotopes have more neutrons?

Yes, they do. Isotopes are caused by an atom carrying extra neutrons.

Some radioactive isotopes have fewer neutrons. These decay by positron emission or K capture instead of electron emission during beta decay.

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Isotopes

Does Sodium have radioactive isotopes?

Sodium does not have naturally occurring radioactive isotopes - as it has only 1 naturally occurring isotope, which has 11 protons and 12 neutrons, and is not radioactive. However, the 18 other known types of sodium isotopes are all radioactive, and sodium-22 (the most stable radioactive sodium isotope) has a half life of 2.6 years.

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Chemistry
Atoms and Atomic Structure
Isotopes

Explain how two isotopes of an element are different?

An isotope of an element is simply an element with the same number of protons, but with a different number of neutrons. Since the proton count establishes elemental identity, chemical traits of different isotopes of the same element tend to be the same. The different number of neutrons, however, affects the stability and mass of the nucleus, sometimes creating a radioactive isotope, sometimes creating a non-radioactive (or stable) isotope.

The atomic number is the number of protons. The atomic mass number is the number of protons plus the number of neutrons. The atomic mass, however, is not integral, because it includes everything, including the electrons, and none of them have the same mass.

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Isotopes

How is the atomic mass an element calculated from isotope data?

The atomic mass that you see on the periodic table is an average mass taken from all of the element's known isotopes. Simply find the average of all of the masses of the isotopes of an element.

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Chemistry
Isotopes

Are the electron arrangements in an isotope the same?

yes because only the number of neutrons differ.

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Chemistry
Elements and Compounds
Atoms and Atomic Structure
Isotopes

Who discovered isotopes in chemistry?

The first hypothesis on isotopes is from Frederick Soddy (1912); the practical confirmation is attributed to J. J. Thomson (1913).

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Isotopes

Why are isotopes important for medicine?

Radioactive isotopes are important to medicine because they have a unique color that can be traced through the body with different types of scans and can help to diagnose patients who have problems that can not be seen by the naked eye.

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Chemistry
Elements and Compounds
Isotopes

What is an etchant for tungsten?

An etchant for CVD W is SC1 (5:1:1 DI:NH4OH:H2O2) at 40°C. 500 angstroms per minute.

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Isotopes

How many protons and neutrons does the isotope Radon 210 contain?

210 total combined

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Physics
Chemistry
Atoms and Atomic Structure
Isotopes

Is an isotope a positively charged particle?

No. An element is a type of atom; distinguished by the number of protons; an isotope might be considered a "sub-type", distinguished by the number of neutrons. In other words, different isotopes of the same element have the same number of protons, but the number of neutrons varies. This is completely unrelated to the electric charge.

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Isotopes

Are compounds and isotopes the same?

No.

Compounds are comprised of 2 or more atoms bonded together. For example, water is H2O, containing two hydrogen atoms and one oxygen atom per molecule.

Isotopes are atoms of the same atomic number, i.e. they have the same number of protons in their nuclei, but differ only in the number of neutrons in the nuclei (e.g. carbon-12 has 6 protons and 6 neutrons, while carbon-14 also has 6 protons, but has 8 neutrons.

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Chemistry
Isotopes

What is the difference between an isotope and an isomer?

An isotope is one of two or more atoms with the same atomic number but different atomic weights because of having more or less neutrons. An isomer is a molecule of a compound that exists in more than one form, each form having different arrangements of atoms but the same molecular weight.

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Chemistry
Elements and Compounds
Isotopes

What does the mass number tell about an isotope?

The number of protons and neutrons in the element

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Chemistry
Elements and Compounds
Atoms and Atomic Structure
Isotopes

An isotope of an element has an equal number of?

Protons and Electrons but NOT neutrons

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Isotopes

What isotope is used to date ancient artifacts such as fossils?

Most commonly Carbon 14.

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Isotopes

How are isotopes used in archaeology?

Archaeologists can use isotopes for various things including dating artifacts, understanding where artifacts come from (such as what region animals were raised in, or where resources were mined) and reconstructing past dietary habits.

See related questions below

I'm no professional on this, but I think I can contribute to something.

Isotopes, (I hope you already know this), are types of the same element, but with different mass, usually due to different numbers of neutrons.

Have you heard of Carbon-Dating? This is when they check objects for specific isotopes and thus giving an estimate of how old the object is.

Carbon Dating, obviously, means the using of the element Carbon to date objects. Carbon-14, an isotope of Carbon, is unstable and radioactive, which means that scientists are able to easily detect the amount of it. Over time, Carbon-14 will 'decompose' into Nitrogen-14, a more stable isotope. This means that, within a carbon object, the lower the number of Carbon-14 isotopes, the older the object.

There's a whole lot of math to it, and I can't exactly explain it just yet. But I hope this gives you the basic understanding.

Archaelogists use Isostopes, a common one is carbon-14 to discover the age of bones, or other material. The amount of carbon 14 will decay at a fixed rate so, by measuring the amount of carbon-14 compared with carbon-12, scientists can know how old it is.

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Health
Job Training and Career Qualifications
Salary and Pay Rates
Isotopes

What is an RN?

RN stands for Registered Nurse

In the United States, a registered nurse has AT LEAST two years of nursing education behind them and they may even have a master's or PhD in nursing. They are licensed by an independent board and must pass a difficult test required a large range of knowledge about the human body, illnesses, symptoms, correct responses and drug interactions among other things. They have the widest scope of any nursing profession and can even open their own practices and practice some forms of medicine without working for a physician. When a doctor decides that you need some form of treatment it is almost always a nurse who will do the actual treating and monitoring to be sure that it is working and there are no complications. They give the shots, check the blood pressure, and generally are the ones out on the front lines making medicine happen. (This is not meant as a slight to doctors who are experts in their own right and also work very hard.) There is a nurse shortage in the U.S. so if you are interested in nursing, we NEED you. Registered Nurse

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Isotopes

How are isotopes useful to science?

They can help in science in terms of discovering radioactivity, creating new natural resources, as well as helping advance technology

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Chemistry
Energy
Elements and Compounds
Isotopes

What is Tungsten?

Tungsten (pronounced /tʌŋstən/), also known as wolfram (/wlfrəm/), is a chemical element with the chemical symbol W and atomic number 74. Tungsten is one of the heaviest materials after gold, for the density of tungsten is 19.25  g•cm3(near r.t.).

Tungsten is one of the Nonferrous Metals, and also it is as molybdenum and rare earths which are Refractory Metals.

It is also used in eletrical bulbs as filament.

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Chemistry
Isotopes

What is the difference between a parent isotope and a daughter isotope?

The daughter isotope is the result of the radioactive disintegration of the parent isotope. For example radium is a product of the uranium disintegration.

The two isotopes have different chemical (different atomic numbers, etc.), physical and nuclear properties.



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Isotopes

What are isotopes?

Isotope is the word we use to talk about two different forms of the same element that have different numbers of neutrons in the nucleus. A given element is identified by the numer of protons in its nucleus; that's its atomic number. Two different isotopes of the same element have the same number of protons, but each has a different number of neutrons in its nucleus.

Said another way, one element may exist in a number of different forms called isotopes. Each element has a number of different isotopes, and this is determined by the number of neutrons in the nucleus. Let's look at an example.

ExampleIf we consider the case of oxygen, all atoms of this element have 8 protons. But the isotope oxygen-15 has 7 neutrons, while oxygen-16 (the most common isotope of oxygen) has 8 neutrons. Oxygen-17 has 9 neutrons. You have probably already noticed that the number of the isotope equals the atomic number of the element plus the number of neutrons in the nucleus of that isotope. This number is called the mass number, the sum of the atomic number and number of neutrons. Different isotopes of one element are chemically identical.
Isotopes of an element have the same number of protons but different numbers of neutrons.
Isotopes are the same elements, but have a different number of neutrons in their nucleus.
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.
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Isotopes

How do the isotopes deuterium and tritium differ?

All hydrogen atoms of any kind have one proton in the nucleus. The number of neutrons differ for the 3 isotopes.

Regular hydrogen has no neutrons in the nucleus (1H), deuterium has one neutron (2H), and tritium has two neutrons (3H).

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Chemistry
Isotopes

What is a radioactive isotope?

to make it simple on you the difference is an isotope is stable. a a radioactive isotope is not stable and usually has a half life.
An isotope is a particular kind of atom ... Like Carbon-12 6protons and 6 neutrons and Carbon-14 6protons and 8neutrons.

The extra neutrons sometimes makes that particular isotope. Carbon-14 is radioactive. But for larger atoms all of their isotopes are radioactive -- like uranium.

The isotopes 'decay' into a different substance by 3 methods ... they can emit alpha partices, or beta particles, or pure energy called gamma rays.
Phosphorous-31 is quiet element. It is not radio active

If suppose one neutron is added then it becomes an isotope P-32. This is radio active

Same way right from P-31 if one neutron is taken out then P-30 would result. This is also radio active. These isotopes are said to be radio active isotopes.

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