Ionic Sizes of Actinides

Q.

‘’Atoms combine to have _ electrons in their valence shells is called the octet rule.

Q.

Which amongst the following is the electron dot structure of $H_2$ molecule?

1. 

2. 

3. 

4. None of the above.

Q. There is a gradual decrease in size of atoms or $M^{+3}$ ions across the actinide series

1. False
2. True