Question

an atom of an element P contains 13 electrons and 14 neutrons
a) what is the atomic number of p
b) us P a metal or non metal​

Answer 1

Answer:

Atomic number=No. of protons=No. of electrons in ground state(unchanged atom)

Atomic number=13=No. of protons

Atomic mass=no. of protons+no. of neutrons=13+14=27

For isotope no. of proton=13(same atomic number but different mass number are isotopes)

no. of electrons=13

no. of neutrons=14+2=16

Answer 2

Answer:

24

Explanation:

Since, M2+ contains 10 electrons and the M2+ ion suggests that it has lost 2 electrons so it contains total 12 electrons. The number of electrons are equal to number of protons in an atom, so its atomic number is 12.

The no of protons and neurones is known as mass number which is 24 (12 + 12 = 24.)