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Isotopes
Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.
1,075 Questions
a Baylor RN is a registered nurse that works every weekend, usually 12 hours each day and gets paid a full time salary.
==new answer== They are naturally connecting readily with their subconscious mind, even if they don't remember having learned how. It is a person's subconscious mind that makes all the connections through the universal subconscious mind. It is in this way that those brilliant ideas are received. It is also how a mother knows when one of her's needs attention even if they are far away. Two or more people can receive the same impression at the same time even though they may be on different continents. It works the same way when you have , on occasion, answered a knock at your door knowing who it was before you opened it, or knew who was calling before you got to the phone. Anyone can, through concentration exercises and meditation, open themselves up to more of these types of experiences. It was through understanding more about mind that gave me a way to understand how prayer works. To develop a better relationship with your subconscious mind, you can increase your level of genius. Again, these are not gifts, they are earned. The proper relationship between conscious and subconscious mind is the "marriage made in heaven" that is referred to in the scriptures. The conscious mind adds further understandings through experience and the subconscious mind stores these additions and provides a way for your thoughts to manifest. A genius knows how to use undivided attention while most other people are busy multi-tasking, thinking that is good? That is the key difference. They know how to focus all their attention on one thing at a time. They may have learned this in a previous incarnation. My dad had total recall and couldn't understand why everyone else didn't know how. I had to get deep into my studies of mind to discover this. We all know a lot that we don't remember having learned.
Someday
What is an etchant for tungsten?
An etchant commonly used for tungsten is a mixture of hydrofluoric acid and nitric acid. This solution is effective in selectively etching tungsten while leaving other materials unaffected. Precautions should be taken when handling these acids due to their corrosive nature.
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
Which isotope of hydrogen is used commonly as a trace in organic chemistry?
Deuterium .
Deuterium is an istope of hydrogen because it contains 1 proton, 1 neutron and one electron.
The commonest isotope is protium , which contains 1 proton and one electrons, and NO neutrons.
Deuterium has the atomic mass of '2'. Symbollically it is shown as [2/1]H .
It has the ato,mic mass of '2' because the nucleus contains 1 proton and 1 neutron ; 1 + 1 = 2
Because of this extra 'maSS' it is sensitive to nmr . (nuclear magnetic resosnsnce), and hence it can be 'seen' on nmr spectra.
How isotopes can have different masses and still be the same element?
For the same element the number of protons and electrons remains unaltered.
Howerm for that same element the number of neutrons can vary., leading to different atomic masses.
Taking hydrogen as an example. It has three isotopes.
#1 ; protium ; 1 proton , 0 neutrons (Atomic Mass ; 1 + 0 = 1 )
#2 ; deuterium ; 1 proton , 1 neutron ( Atomic mass ; 1 + 1 = 2)
#3 ; tritium ; 1 proton, 2 neutrons ( Atomic Mass ; 1 + 2 = 3)
Notice for each isotope of hydrogen there is only ONE proton. However, for each different isotope of hydrogen there is a different number of neutrons.
The Atomic Mass is the sum of the protons and neutrons).
#4 ; Helium(He) ; 2 protons, 2 neutrons ( atomic mass 2 + 2 = 4 ).
For comparison helium has 2(TWO) protons and 2 neutrons, but it is an entirely different element, because it has a different number of protons.
Are there 2 neutrons in the helium 4 isotope?
Yes. He-4 isotope has 2 protons, 2 electrons and 2 neutrons
What are short-lived isotopes?
Short-lived isotopes are isotopes with relatively short half-lives. Note that short-lived is a relative term, and that means you need to make some kind of comparison to use the term correctly. Let's look at one example using cobalt, which has only one stable isotope, cobalt-59.
We make cobalt-60 by lowering a fixed amount of cobalt-59 into an operating nuclear reactor. It will bathe in the neutron flux there to become activated (neutron activation). The cobalt-59 absorbs a neutron and has been activated to become cobalt-60, which is an unstable isotope of cobalt. That means it is radioactive, and it has a half-life of 5.2714 years. If we look at another isotope, cobalt-58, we find it has a half life of 7.86 days. It's a short-lived isotope of cobalt, compared to cobalt-60. Need another example? Then let's do one more.
In the case of rubidium, the isotope rubidium-85 is the only stable isotope of this metal. Rubidium-87, on the other hand, has a half-life of 4.88x1010 years, which is longer than the estimated age of the universe. (Wow!) The isotopes rubidium-83 and rubidium-84 have half-lives of 86.2 days and 32.9 days, respectively. These two isotopes are short-lived isotopes of rubidium, at least compared to the long-lived rubidium-87 isotope.
There are many isotopes of elements that have been synthesized in the nuclear physics labs, and a lot of them have half-lives of less than one second. The term short-lived isotope is a relative term, and it should be used with that idea in mind. The difference between the two (or more) compared isotopes can be smaller, as in the case of cobalt, or larger, as we showed in rubidium. That difference doesn't have to be specific either, so remember that as well.
We'll depart with the idea that the term "short-lived isotope" is often encountered in medical imaging. The short-lived isotopes referred to usually have half-lives of days or even hours, and are synthesized shortly before use (because they don't last long).
What is the meaninq of two isotopes stable and unstable isotopes?
Isotopes are atoms of the same element that have the same number of protons, but different numbers of neutrons, and therefore different masses. Unstable isotopes are radioactive and undergo radioactive decay of their nuclei, while stable isotopes do not undergo radioactive decay.
An isotope is identified by its atomic mass number which is the total number of?
protons and neutrons in the nucleus of an atom. Isotopes of an element have the same number of protons but different numbers of neutrons. The number of neutrons in an atom affects its stability and often determines its nuclear properties.
Which is an example of a highly unstable isotope that is often used in fission reactions?
Uranium-235 (U-235) is an example of a highly unstable isotope that is used in fission reactions. It undergoes spontaneous fission, releasing a large amount of energy and additional neutrons, which can then go on to induce fission in other uranium atoms, leading to a chain reaction.
Do isotopes have different electrical charges?
No, isotopes have the same electrical charge because they have the same number of protons in their atomic nuclei, which determines the electrical charge. Isotopes only differ in the number of neutrons, which do not have an electrical charge.
Where are isotopes located at?
Isotopes are located within the nucleus of an atom. They are variants of a particular chemical element, having the same number of protons but different numbers of neutrons. Isotopes can exist naturally or be artificially produced.
What is a isotope for hydrogen?
Deuterium is an isotope of hydrogen. It has one proton and one neutron in its nucleus, compared to regular hydrogen which has only one proton. Deuterium is slightly heavier than regular hydrogen and is often used in laboratory experiments and as a tracer in scientific studies.
What atomic particle that determines a specific isotope?
Atoms are electrically neutral. The number electrons and number of protons in neutral atoms are same. The number of neutrons in some atoms are same as the number of protons. Example: Calcium atom contains 20 protons and 20 neutrons.
But some atoms contain same number of protons but different number of neutrons. For example carbon atoms exist in three forms - all contain 6 protons but some contain 6 neutrons, some 7 neutrons and others with 8 neutrons. These type of atoms are known as isotopes
Definition of isotope: Atoms with same number of protons but different number of neutrons
It shows that the different number of neutrons determines the existence of isotopes.
Atoms are electrically neutral. The number electrons and number of protons in neutral atoms are same. The number of neutrons in some atoms are same as the number of protons. Example: Calcium atom contains 20 protons and 20 neutrons.
But some atoms contain same number of protons but different number of neutrons. For example carbon atoms exist in three forms - all contain 6 protons but some contain 6 neutrons, some 7 neutrons and others with 8 neutrons. These type of atoms are known as isotopes
Definition of isotope: Atoms with same number of protons but different number of neutrons
It shows that the different number of neutrons determines the existence of isotopes.
What is the most common instrument used to measure isotope?
The most common instrument used to measure isotopes is a mass spectrometer. Mass spectrometry allows scientists to accurately determine the mass and abundance of isotopes in a sample. It works by ionizing the atoms in the sample and separating them based on their mass-to-charge ratio.
An isotonic solution of sodium chloride has a concentration of 9 g/L.
What is the equation to describe the beta decay of polonium -220?
210 4 214
84 PO -------> 2 alpha + 86 RN
What subatomic particle changes in an isotope?
I'm assuming that by "change" you mean alter the quantity thereof. If you want to actually change a proton into a nuetron and eject a positron, that requires a nuclear reaction.
The protons and neutrons are in the nucleus and serve to define the atom, while the electrons orbit the nucleus and ultimately determine the atom's charge. Electrons can be removed or added with a certain amount of energy. This energy is relatively small compared to the massive amounts required to alter the subatomic particles within the nucleus.
How are the Isotopes of strontium alike?
They have the same number of protons (and of electrons) and so their chemical properties are the same.
How can you determine the number of neutrons in an isotope?
One doesn't generally "calculate" the number of neutrons. The number of neutrons in an atom is always equal to the number of protons, and the number of protons can be found on the Periodic Table of Elements, which can easily be found on the internet or in a science textbook.
Would carbon dating work if carbon-14 atoms did not decay at a constant rate and why?
Statistically carbon-14 atoms decay at a constant rate.
Yes, unless there are twoisotopescoincidentallyhavingthe equal half lives.
How do you find atomic mass and mass number of isotope?
The atomic mass of an isotope is the weighted average of the masses of the naturally occurring isotopes of an element. It is found by multiplying the mass of each isotope by its natural abundance and summing these values. The mass number of an isotope is the total number of protons and neutrons in its nucleus and can be found by rounding the atomic mass to the nearest whole number.
