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A, B, C, D are four elements. The electr...

A, B, C, D are four elements. The electronic configuration is given below and find the answers in the following (Hint. The symbols are not real)
A-2,2
B- 2, 8, 5
C- 2, 7
D- 2, 8, 2
Find the elements belongs to same period?

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The correct Answer is:
B,D and A, C because the number of shells are same.
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MAXIMUM PUBLICATION-CLASSIFICATION OF ELEMENTS AND THE PERIODIC TABLE-EXAMPLE
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  2. There are three shells in the atom of element 'X', 6 electrons are pre...

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  7. There are three shells in the atom of element 'X', 6 electrons are pre...

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  8. Electronic configurations of elements P, Q, Rand S are given below. (T...

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  9. Electronic configurations of elements P, Q, Rand S are given below. (T...

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  11. Electronic configurations of elements P, Q, Rand S are given below. (T...

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