Question

The elements of a period of the Periodic Table are given below in order, from left to right with one of its element missing.
Li Be B C O F Ne
(i) To which period do these elements belong?
(ii) One element of this period is missing. Which is the missing element and where should it be placed?
(iii) Which one of these elements in this period shows the property of catenation?
(iv) Which one of the above elements belong to the halogen series?
(v) Identify the noble gas.

Answer 1

1. These elements belong to the 2nd period.

2. The element which is Missing is Nitrogen (N).

3.The property of catenation is shown by Carbon.

4.Fluorine belongs to halogen family.

5. neon is the Noble gas.

Hope it helps you

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Answer 2

Answer:

(i) These elements belongs to second period.

(ii) N ( nitrogen) element is missed.

It should place in p-block and 15th group of periodic table.

(iii) C (carbon) shows the property of catenation.

(iv) F ( fluorine) belong to the halogen series.

(v) Ne ( neon) is noble gas.