Chemistry
M is a metal 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 :
(i) State the number of electrons in the outermost shell of M ?
(ii) Name the group to which M belongs.
(iii) which element has more electronegativity, M or O?
Periodic Table
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Answer
Given, M is a metal
(i) Number of electrons in the outer most shell of M is 1. It is so because the valency of O is -2 and as 2 atoms of M combine with O to form M2O, hence we can say that M has 1 valence electron.
(ii) M belongs to group 1 [1A] because there is 1 electron in the outer most shell.
(iii) M is a metal which belongs to group 1 whereas oxygen is a non metal with higher electronegativity compared to a M.
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