An atom has an electronic configuration $2, 8, 7$

(a)Name the group to which it belongs to:

(b)To which of the following elements would it be chemically similar?

[ $N (7)$ , $F (9)$ , $P (15)$ , $A r (18)$ ]

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Solution

(a) It belongs to 17 group.

(b) Fluorine is chemically similar to chlorine.

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An atom has electronic configuration 2, 8, 7.
To which of the following elements would it be chemically similar? (Atomic numbers are given in parentheses.)

Q. The electron configuration of an atom is

2, 8, 7

to which of the following elements would it be chemically similar?

Q. An element has its electron configuration as

2, 8, 2

. Now answer the following questions: With which of the following elements would this element resemble? Atomic numbers are given in the brackets below:

N (7)

B e (4)

A r (18)

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An atom has an electronic configuration 2,8,7(a)Name the group to which it belongs to:(b)To which of the following elements would it be chemically similar?[N(7),F(9),P(15),Ar(18)]

(a) It belongs to 17 group.(b) Fluorine is chemically similar to chlorine.

An atom has an electronic configuration $2, 8, 7$

(a)Name the group to which it belongs to:

(b)To which of the following elements would it be chemically similar?

[ $N (7)$ , $F (9)$ , $P (15)$ , $A r (18)$ ]

(a) It belongs to 17 group.

(b) Fluorine is chemically similar to chlorine.