Question

Study the data of the following 3categories A-Li 7,Na23,K39, B- N14,P31,As74 C- B10.8,Al27,Ga69.7

Answer 1

Answer:

The basic structure of an atom consist of the nucleus which contain both protons and neutrons and the electrons which is around the nucleus. The majority of the mass of an atom is concentrated in its nucleus so the total mass of an atom is approximately equal to the sum of the numbers of protons and neutrons in the nucleus.

Answer and Explanation:

For the given example, 11 corresponds to the atomic number while 23 is the atomic mass of Na (sodium).