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The electronic configuration of four elements are given below. Which elements does not belong to the same family as others ?
Options
(a) [Xe]4f¹⁴5d¹°1s²
(b) [Kr]4d¹°5s²
(c) [Ne]3s³3p⁵
(d) [Ar] 3d¹°4s²
Correct Answer:
[Ne]3s³3p⁵
Explanation:
Elements (a), (b) and (d) belong to the same group since each one of them has two electrons in the s sub shell. In contrast, element(c) has seven electrons in the valence shell and hence does not lie in the same group in which elements (a), (b) and (d) lie
Related Questions: - Which of the following compounds is efflorescent?
- Which of the following is not permissible arrangement of electrons in an atom?
- 0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- At 0K, (i) ¹²C and (ii) a mixture of ¹²C and ¹⁴C will
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following compounds is efflorescent?
- Which of the following is not permissible arrangement of electrons in an atom?
- 0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc
- Replacement of Cl of chlorobenzene to give phenol requires drastic conditions.
- At 0K, (i) ¹²C and (ii) a mixture of ¹²C and ¹⁴C will
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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