Elements of one short period of the periodic table are given below in

1.	Elements of one short period of the periodic table are given below in the order from left to right. Li, Be, B, C, N, F, Ne Answer the following : (i) To which period, do these elements belong ? (ii) One element of this period is missing. Which is the missing element and where it should be placed ? (iii)Which of the above elements belong to the family of halogens ? What is its electro - negativity value ?(iv) How does the metallic character vary in the period ?
Answer» (i) 2^nd period. (ii) Oxygen. It should be placed between Nitrogen and Flourine. (iii) Flourine Electro-negativity 4.0 (iv) Decreases from left to right.

Elements of one short period of the periodic table are given below in the order from left to right. Li, Be, B, C, N, F, Ne Answer the following : (i) To which period, do these elements belong ? (ii) One element of this period is missing. Which is the missing element and where it should be placed ? (iii)Which of the above elements belong to the family of halogens ? What is its electro - negativity value ?(iv) How does the metallic character vary in the period ?

Answer»

(i) 2^nd period.

(ii) Oxygen.

It should be placed between Nitrogen and Flourine.

(iii) Flourine

Electro-negativity 4.0

(iv) Decreases from left to right.

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