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If you had a stable element 115 could you then have an isotope of it that would be non-radioactive?
Wiki User
∙ 14y ago
If you had a stable element 115, then by definition there would need to be at least one non-radioactive isotope. Stable elements are those that have at least one nonradioactive isotope. Of course, the other isotopes of the element could all be radioactive.
Wiki User
∙ 14y ago
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What isotope of uranium has less than 3 neutrons?
None, no element beyond lithium can have a stable isotope with as few as 3 neutrons. If by some happenstance a uranium nucleus did form with as few as 3 neutrons (this would be U95) it would instantly burst apart in a flash of protons before it could even be detected.
If a single atom of an unidentified element has a mass of 3.818x10-23 g What is the element?
The mass number can be found by multiplying the mass of a single atom by Avogadro's number, that is 6.022 X 1023. In this instance, the product is 23.0, and the element is probably sodium, which has this gram atomic mass. mass number is less than 1, which does not correspond to any real, stable atom. The element could conceivably be a rare isotope of neon or magnesium.
Can you find out the number of electrons by adding protons and neutrons?
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
Can atoms of two different elements have the same atomic number and could they have the same mass number?
The atomic number, or Proton number, defines which element it is. So by definition, two different elements must have a different atomic number, or else they'd be the same element. Atomic mass is the number of protons + neutrons in the element's nucleus. Since the number of neutrons in the nucleus can vary, even within a single element (as isotopes) it is possible to have one isotope of one element sharing an atomic mass with an isotope of another element.
What is the average atomic mass of an element with two isotopes of 220 and 250?
To calculate the median atomic weight, the relative abundance of each isotope could be calculated or given.
What is the element that has 4 protons and 4 electrons and 3 neutrons?
It could possibly be a stable isotope of Beryllium
What element is three protons and two neutrons?
It is the lithium metal. It could be a isotope of Li.
What isotope of uranium has less than 3 neutrons?
None, no element beyond lithium can have a stable isotope with as few as 3 neutrons. If by some happenstance a uranium nucleus did form with as few as 3 neutrons (this would be U95) it would instantly burst apart in a flash of protons before it could even be detected.
How many neutron are in the element hydrogen?
Depending on the isotope it could be 0,1 or 2. Usually it is 0.
What element has four protons four electrons and five neutrons?
There are too many electrons. This would be a negative ion of lithium-6 (stable but less common isotope) that does not occur naturally. The element with 3 electrons, 3 protons, and *4 neutrons* is lithium-7, the most common isotope. It forms a stable positive ion (2 electrons).
If a single atom of an unidentified element has a mass of 3.818x10-23 g What is the element?
The mass number can be found by multiplying the mass of a single atom by Avogadro's number, that is 6.022 X 1023. In this instance, the product is 23.0, and the element is probably sodium, which has this gram atomic mass. mass number is less than 1, which does not correspond to any real, stable atom. The element could conceivably be a rare isotope of neon or magnesium.
Can you find out the number of electrons by adding protons and neutrons?
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
The element boron has only two stable isotopes one stable isotope has a mass number of 10 and the other has a number of 11. what could be the atomic weight of the element?
From what I remember of chemistry, the amu of each element on the periodic chart is a weighted average of all the isotopes of that element. So, as you indicated - 80.2% of Boron exists as B-11 and 19.8% of boron exists as some other isotope. In that case you can get an estimate of the amu of the unknown through simple math: 0.802*(11.01 amu) + 0.198*(X amu) = 10.81 Solving for x, you get 10.00 amu
Could two isotopes of an element have different number of protons?
yes, protons affect which element an atom is. Each isotope of different elements has generally a different number of neutrons. Isotopes with the same neutron number are called isotones.
What matter is in an element?
The only matter in a stable element is at least one of each of the two stable electrically charged subatomic particles, protons and electrons, and except for an atom of the isotope hydrogen-1, at least one neutron, the uncharged stable subatomic particle. The numbers of protons and electrons must be the same. Artificial elements may contain other subatomic particles such as positrons. (The subatomic particles themselves are considered to be composed of quarks, which could be called sub-subatomic particles, but quarks are not usually considered to be matter since they can not exist in isolation for more than very small fractions of a second.)
Can atoms of two different elements have the same atomic number and could they have the same mass number?
The atomic number, or Proton number, defines which element it is. So by definition, two different elements must have a different atomic number, or else they'd be the same element. Atomic mass is the number of protons + neutrons in the element's nucleus. Since the number of neutrons in the nucleus can vary, even within a single element (as isotopes) it is possible to have one isotope of one element sharing an atomic mass with an isotope of another element.
What is the average atomic mass of an element with two isotopes of 220 and 250?
To calculate the median atomic weight, the relative abundance of each isotope could be calculated or given.
