Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
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Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
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Classification of Elements and Periodicity in Properties
question_answer
Which of the following elements A, B, C, D and E with atomic number 3, 11, 15, 18 and 19 respectively belong to the same group?
A) A, B, C
B) B, C, D
C) A, D, E
D) A, B, E
Correct Answer:
D
Solution :
A (Z = 3); B (Z - 11) and E (Z = 19) are all alkali metals.