Year: 2018
Topic: Classification of Elements and Periodicity in Properties
Time :
1.
Among CaH
2
, BeH
2
, BaH
2
, the order of ionic character is
(1). BaH
2
< BeH
2
< CaH
2
(2). BeH
2
< BaH
2
< CaH
2
(3). CaH
2
< BeH
2
< BaH
2
(4). BeH
2
< CaH
2
< BaH
2