Question

atomic number and mass number of elements 18 and 14 respectivally find proton, neutron, electron and state its valency Is thes element a metal or a non metal justify the answer ​

Answer 1

Answer:

(a) No. of protons = atomic number = 18

No. of electrons = no. of protons = 14

No. of neutrons = Mass number - atomic number

= 14 - 18

= 4

So, Valency = 8 - no. of valence electrons

= 8 - 18

= 10

Answer 2

I don't know ok ok ok