Question

the number of electrons protons and neutrons of five elements are give below
.making use of these data find. ​

Answer 1

a) ions are those species that dont have equal number of proton and electron

P) and S)

b) Q) is noble gas , as it has 18 atomic number i.e. of Argon

c) Isobars are atoms of different chemical elements that have the same number of nucleons.

P) and U)

d) All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.

R) and T)

e) no of protons = atomic number = 9

Flourine is the ninth element

therefore , it is non metal

f) valency of p is +2