Question

M is a metal above hydrogen in the activity series and its 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

1) Ionic bond exists between M and O.

2) 1 electron is present in the outermost shell of M

3) M belongs to Group 1 in the modern periodic table.

4) At cathode: M⁺ + 1e^- → M

5) At anode: Oxygen gas