Question

2) P.  -    2, 8, 7
      Q -.    2, 3
       R -.    2 ,8 , 8
        S -.    2 ,8 , 3
a) which elements are in same group
b) which among is a noble gas
c) which are in same period
d)find valency of P
e) write family of S
f) Among the given which is having highest ionisation energy.     (1*6)​

Answer 1

Answer:

a) q and s

b) r

c) p , r and s

d) -1

f) q

Explanation:

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