Question

An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?​

Answer 1

Answer:

here is your answer dear....

Element with electronic configuration 2,8,2 belongs to 3rd period and 2nd group. The valence electrons give us the idea of group number. As the electrons are divided into 3 different shell therefore period number is 3.

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Answer 2

Answer:

$\huge\bold\pink{ANSWER :-}$

• ===>> Element with electronic configuration 2,8,2 belongs to 3rd period and 2nd group. The valence electrons give us the idea of group number. As the electrons are divided into 3 different shell therefore period number is 3.

• (i) Group 17, Period

• (ii) 17.

• (iii) It is non-metallic because it has 7 valence electrons. It can gain 1 electron easily forming a negative ion.

• (iv) Chlorine.

• (v) Bromine or Iodine or Fluorine are chemically similar to chlorine