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One element that is always radioactive and has an atomic number less than 50?
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∙ 15y ago
Technetium
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∙ 15y ago
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How many neutrons does nobelium have?
157; you figure that out by taking the atomic mass (259) and subtract it by the # of protons (102) and the answer is the # of neutrons. ( the atomic #, # of protons, and # of electrons are always the same # 102 ). But each isotope of nobelium has a different number of neutrons, depending on the atomic mass.
How do you calculate neutrons for elements in the periodic table?
them mass number of an element is the total amount of nuetrons and protons in the element , and the atomic number is the amount of protons ( and electrons) in the element simply subtract the atomic number from the mass number and you'll have the number of neutrons in the element hope this helped x
Radioactive elements comprise a majority?
Yes. Stable elements are 83 elements. all elements above that of atomic number 83 (Bismuth) are radioactive. Radioactive isotopes are of the order of 1500 radioactive isotope.
How can you tell how many neutrons are in an element?
The number of neutrons in an element is determined by subtracting the atomic number from the atomic mass number rounded to the nearest whole number. On the other hand, very few atoms are abnormal and have a different amount of neutrons than other atoms of the same element. These are called isotopes and are indicated by a number following the element symbol (eg. C-14). This is a radioactive isotope of carbon that has six protons based on the atomic number and two more neutrons than normal--8. (8+6=14). Finally, the reason that the atomic mass units end in decimals is that this is just an average weight. The isotopes can either bring this number up or down. atomic number [ 6 ] symbol [ C ] mass (atomic mass units (amu)) [ 12.01 ]
Which element has the highest number of electrons?
Because an atom of element has the same number of electrons as of protons and the number of protons in an atom is the same as the atomic number of the atom, the answer to this is whichever element has the highest atomic number yet synthesized.
Heaviest element that is highly radioactive?
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
Which element is Atomic number- 112?
The element with an atomic number of 112 is called Copernicium. It is a synthetic, radioactive element that can only occur in a laboratory.
What is the name of the element with the lowest atomic number?
Technetium - its atomic number is 43.
What is the atomic number of radioactive nitrogen?
Nitrogen is a non metal element. Atomic number of it is 7.
Which radioactive element has the symbol Ra?
Radium. Atomic number 88
Can the atomic number change over time?
No. The atomic number of an element never changes. It is the number of protons and it defines the element. In certain types of radioactive decay, the number of protons can change, but then it is no longer the same (parent) element, but rather is a new (daughter) element.
What radioactive element was named after the planet Pluto?
Plutonium, atomic number 94
What is uraniums atomic number?
Uranium is a radioactive element. It is in the f block. We use it for make energy.
What element has an atomic number of 94?
Actinium is a meta element. Atomic number of it is 89.
What are the radioactive elements with atomic number from 90 to 103 in the periodic table called?
Actinide Series.
First element known to be radioactive?
Radium (Ra) atomic number 88
What type of element is fermium?
Fermium is an artificial element, solid, metal, radioactive, actinoid, atomic number 100.
