1.

The elements of one short period of the Periodic Table are given below in order from left to right : Li Be B C O F Ne (a) To which period do these elements belong ? (b) One element of this period is missing. Which is the missing element and where should it be placed ? (c) Place the three elements fluorine , beryllium and nitrogen in the order of increasing electronegativity. (d) Which one of the above elements belongs to the halogen series ?

Answer»

The elements of one short period of the Periodic Table are given below in order from left to right :

Li Be B C O F Ne

(a) To which period do these elements belong ?

(b) One element of this period is missing. Which is the missing element and where should it be placed ?

(c) Place the three elements fluorine , beryllium and nitrogen in the order of increasing electronegativity.

(d) Which one of the above elements belongs to the halogen series ?



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