Question

please tell me the answer of the 11 question

Answer 1

11 a) i) E
ii) B
b) CD
C -> 2,1 D -> 2,6
Valency of C is 1 and of D is 2
Formula = C2D ( 2is subscript)
c) i) metals are A and C
ii) nonmetals are B,D and E


Hope it helps

Answer 2

atoms. Mass no. Atomic no. electronic con.
A-- 40. 20 (2,8,8,2)metal
B== 19. 9 (2,7)non metal
C== 7. 3 (2,1)metal
D== 16. 8. (2,6)non metal
E== 14. 7. (2,5)non metal