What is the common feature of the electronic configurations of the elements at the end of Period 2 and Period 3?

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Asked: 2023-11-08T22:44:17+05:30 In: Science
What is the common feature of the electronic configurations of the elements at the end of Period 2 and Period 3?

Hi, I have a question and I hope anyone could answer it:

(i) What is the common feature of the electronic configurations of the elements at the end of Period 2 and Period 3?
(ii) If an element is in Group 7 (or Group 7A) is it likely to be metallic or non-metallic character?
(iii) Supply the missing word from those in brackets.
If an element has one electron in its outermost energy level (shell) then it is likely to be (metallic/non-metallic)

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    1 Answer

    2. (i) The atoms of the elements at the end of period 2 and Period 3 contains 8 electrons in their outermost shell.

      (ii) Non-metallic. 

      (iii) Metallic. 

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