Question

solve the following questions ​

Answer 1

Answer:

he could not put the hydrogen in appropriate position in the periodic tabular form

more regular atoms were yet to be know

Answer 2

Answer:

1. mandel law his many demiritis he can not put hydrogen on it exact group other fault occure in hybridization of carbon third one is bromine group has 3 electron in its valence shell which after bonding cannot full fill its octet