Question

Maximum number of electrons in outermost cell of s,p,d,f block elements.
1) 2,6,10,14
2)2,8,18,32
3)2,8,10,2
4)2,8,2,2

Answer 1

# for S-block elements ; [inert gas]ns^x
where { x = 1, 2 }
so,
max no of electrons in outermost shell = 2

# P-block elements ; [ inert gas ]ns²np^x
where x { 1 to 6}
so, max no of electrons O.M.S = 2 + 6 = 8

# d-block elements ; [inert gas] ( n-1)d^1-10. ns^0-2 .
max no of electrons in O.M.S= 2

# f- block -
[ inert gas ] (n-2)f¹⁴ (n-2)s²(n-1)p^6 ( n-1)d^0-1 ns^2

max number of electrons in O.M.S = 2

hence,

2, 8 , 2, 2
option (4) is correct .