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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.
Solution
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
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