Question

An element A has one electron in its third shell . a) write down the group number & period to which it belongs. b) identify the element & write the nature of its oxide.
plz answer ​

Answer 1

Explanation:

a. The element belongs to third group and first period

b. Sodium (Na) is the element

It's oxide I.e Sodium oxide (Na2O) is Basic (Because Metal oxides are basic).

number of shells = the group number of that element

number of valence electrones= the period number of the element

Hope you understood my explanation

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