The electronic configuration of few elements is given below. Mark the statement which is…
Chemistry · Class 11 · CBSE — Classification of Elements and Periodicity in Properties
The electronic configuration of few elements is given below. Mark the statement which is not correct about these elements.
(i) 1s2 2s2 2p6 3s1 (ii) 1s2 2s2 2p5 (iii) 1s2 2s2 2p6 (iv) 1s2 2s2 2p3
(i) 1s2 2s2 2p6 3s1 (ii) 1s2 2s2 2p5 (iii) 1s2 2s2 2p6 (iv) 1s2 2s2 2p3
- (i) is an alkali metal.
- (iii) is a noble metal.
- (i) and (ii) form ionic compounds.
- (iv) has high ionisation enthalpy.
Answer
(B) (iii) is a noble metal.
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