1 s2 - 2 s2 2 p6 - 3 s2- 3 p6 - 4 s2- The given electronic configuration represents which group-A- Group I AB- Group II AC- Group III AD- None of these

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Byju's Answer

Standard XII

Chemistry

Periods

1 s2 ; 2 s2 2...

Question

$1 s^{2}; 2 s^{2} 2 p^{6}; 3 s^{2}, 3 p^{6}; 4 s^{2}$ . The given electronic configuration represents which group?

Group I A

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Group II A

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Group III A

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None of these

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Solution

The correct option is B
Group II A

The 's' is the outermost orbital in this case and it contains two valence electrons. Thus the given electronic configuration belongs to Group II A.

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$\begin{matrix} G r o u p (A) & G r o u p (B) (a) A u t o t r o p h i c n u t r i t i o n & (i) L e e c h (b) H e t e r o t r o p h i c n u t r i t i o n & (i i) P a r a m o e c i u m (c) P a r a s i t i c n u t r i t i o n & (i i i) D e e r (d) D i g e s t i o n i n f o o d v a c u o l e s & (i v) G r e e n p l a n t \end{matrix}$

(a) What is the fundamental difference in the electronic configurations between the group 1 and group 2 elements?

(b) On the basis of electronic configuration, how will you identify :

(i) chemically similar elements?

(ii) the first element of a period?

Q. Write the general electronic configuration of noble gas group. Which element of this group is useful in magnetic resonance imaging (MRI)?

Q. The atom having the valence shell electronic configuration

4 s^{2} 4 p^{2}

would be in?

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1s2;2s22p6;3s2,3p6;4s2. The given electronic configuration represents which group?

The correct option is B Group II A The 's' is the outermost orbital in this case and it contains two valence electrons. Thus the given electronic configuration belongs to Group II A.

$1 s^{2}; 2 s^{2} 2 p^{6}; 3 s^{2}, 3 p^{6}; 4 s^{2}$ . The given electronic configuration represents which group?

The correct option is B
Group II A

The 's' is the outermost orbital in this case and it contains two valence electrons. Thus the given electronic configuration belongs to Group II A.