Question

How many protons and how many neutrons are in the nucleus of plutonium-239?

Answer 1

Answer:

the atomic number of plutonium is 94. so number of proton in every element is equal to its atomic number. so number of neutron can be calculated by substraction ofnumber of proton from atomic weight/atomic mass.i.e,145

Explanation:

it has got 15 isotopes having atomic mass ranging from 232 to 246