Need help picking which one best describes the answer

Question

Pick the radioactive isotope in each set. 

 ²³⁷₉₃Np  ²⁰₁₀Ne

Its atomic number is greater than 83.

Its atomic number is less than 83. 

It has fewer neutrons than protons in the nucleus.

It is an even-even nuclide.

It is an odd-odd nuclide.

none of these

  ¹¹₅B  ⁷⁰₃₁Ga

Explain your choice.

Its atomic number is greater than 83.

Its atomic number is less than 83.

It has more neutrons than protons in the nucleus.

It has fewer neutrons than protons in the nucleus.

It is an even-even nuclide.

It is an odd-odd nuclide.

none of these

 ⁶₃Li  ³⁴₁₅P

Explain your choice.

Its atomic number is greater than 83.

Its atomic number is less than 83.

It has more neutrons than protons in the nucleus.

It has fewer neutrons than protons in the nucleus

.It is an even-even nuclide.

It is an odd-odd nuclide.

none of these

Answer 1

There are a lot of questions here and I'm unsure what it is that you do not understand but perhaps this will help:

So

has this meaning: Np is the abbreviation of the element. In this case, Neptunium. The 93 means the atomic number is 93 and it means there are 93 protons. The 237 means that the number of protons plus the number of neutrons is 237. So there must be 144 neutrons (237 - 93 -= 144)

Even–even nuclei mean they have an even number of neutrons and an even number of protons.

And. of course, odd-odd nuclei mean they have an odd number of neutrons and an odd number of protons.

You should be able to answer these questions with this information