Which of the following element belongs to the halogen group?

1 s^{2}, 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}

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1 s^{2}, 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}, 4 s^{2}

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[A r] 3 d^{10}, 4 s^{2} 4 p^{5}

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[K r] 4 d^{10}, 5 s^{2} 5 p^{5}

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Solution

The correct options are
A $1 s^{2}, 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$
B $[A r] 3 d^{10}, 4 s^{2} 4 p^{5}$
C $[K r] 4 d^{10}, 5 s^{2} 5 p^{5}$
Elements who have valence electron configuration $n s^{2} n p^{5}$ belongs to halogen group.

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Similar questions

Pick all the elements that belong to the halogen group.

The atomic numbers of three elements A, B and C are given below :

Element Atomic number

A 5

B 7

C 10

(i) Which element belongs to group 18? (ii) Which element belongs to group 15?

(iii) Which element belongs to group 13? (iv) To which, period/periods do these elements belong?

[K r] 4 d^{10} 4 f^{14} 5 s^{2} 5 p^{6} 5 d^{1} 6 s^{2}

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