Find out the mass number of the 'X' which have 20 atomic number and have 20 neutron element.
Answers
Answered by
6
Answer:
atomic mass number (Z) = no. of protons + no. of neutrons = 20 + 20 = 40
Answered by
2
Answer:
calcium
number of neutrons = 20
An atom of the calcium-40 isotope has 20 neutrons in its nucleus
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