Question

M is a metal above hydrogen in the activity series and it's oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context answer the following :
1. what kind of combination exists between M and O?
2.how many electrons are there in the outermost shell of M ?
3. name the group to which m belongs ?
4. state the reaction taking place at the cathode.
5. name the product at the anode.

Answer 1

(i) Electrovalent bond exists between M and O.  (ii) One electron is there in the outermost shell.  (iii) M belongs to First group. 
(iv) M+ + e- -----> M (at cathode). 
(v) Oxygen gas is liberated at anode.

Answer 2

Answer:

1)Electrovalent Bond

2) 1 electron in outermost shell

3)M belongs 1st group

4)M^+ + e^- --------------> M(at Cathode)

5)Oxygen is liberated at anode