Question

Two elements X and Y have atomic number of 16 and 19 respectively. Compare their valency, number of protons in their ions and number of electrons in their ions.

Answer 1

X WILL BE X2+ AND Y WILL BE Y-
VALENCY:-X=2. Y=1
PROTON:-X=16. Y=19
ELECTRON:-X=18. Y=18

Answer 2

No. of proton= Atomic No. of element
No of proton in both X and Y are 16 and 19 respectively
Valency of X=2
Valency of Y=1
No. of electrons in ion of X= 18( It has gain 2 electrons)
No. of electrons in ion of Y=18( It has loose its last 1 electron)
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