Question

d the
satellite launch vehicle developed by ISRO with the help of
a schematic diagram.
(iii) What is the periodic trend in the variation of valency while
going down a group? Explain your answer with reference
to the group 1, group 2 and group 18.
Group I Group II
Group 18
04
OR
int.
He
н
ar in
2
Li
ве
Ne
2,8
the
2,1
Ar
Na
2, 8, 1
2,2
Mg
2,8,2
Ca
2, 8, 8, 2
2, 8, 8
K
2,8,8,1​

Answer 1

I can not understand your question sorry