Question

An element belongs to 4th period and group 17 of the periodic
table. Find out
1) The number of valence electrons
2) Is it a metal or non-metal
3) name the element
4) Formula of its compound with hydrogen
5) electron dot structure of this element with calcium

Answer 1

(1) no.of valence electrons are 4 .
(2) it is non metal.
(3) HBr is the compound.
(4)CaBr2

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Answer 2

1)no of valence electrons is 4

2)non metal

3)bromine

4)HBr