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The element with 1s^2 2s^2 2p^ 6 3s^2 3p...

The element with `1s^2` `2s^2` `2p^ 6` `3s^2` `3p^6` is placed in the group ________ of the periodic table.

A

1

B

6

C

8

D

18

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The correct Answer is:
D
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Elements A, B, C, D and E have the following electronic configuration: A: 1 s^2 2 s^2 2 p^1 B: 1 s^2 2 s^2 2 p^6 3 s^2 3 p^1 C : 1 s^2 2 s^2 2 p^6 3 s^2 3 p^3 D : 1 s^2 2 s^2 2 p^6 3 s^2 3 p^5 which among these will belong to the same group in the periodic table?

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Complete the following: ……………. = 1s^2 2s^2 2p^6 3s^2 3p^3

Subshell elctronic configuration of an element 'X' is given. 1s^2 2s^2 2p^6 3s^2 3p^6 3d^3 4s^2 a. Findout the block in which x is included? b) Represent the subshell electronic configuration in 'x' by using the symbol of noble gas preceding it.

The outermost electronic configuration of A is 2s^2 2p^2 (Symbols are not real) a) Find the group number, block of this element. b) Write the chemical formula of the compound obtained by the reaction of A and chlorine. c) Write down the complete subshell electronic configuration of the element coming just below A in the same group of the periodic table?

The electronic configuration of the elements are given below. A- 1s^2 2s^2 2p^6 3s^2 3p^4 B- 1s^2 2s^2 2p^6 3s^2 C- 1s^2 2s^2 2p^6 3s^2 3p^5 D- 1s^2 2s^2 2p^6 3s^1 Which is the period number of the elem-ent A? What is the basis of your find-ings?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which of these elements belongs to 4^(th) period ?

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