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Q.

Statement-1: The 5th period of periodic table contains 18 elements not 32.
Statement-2: The order in which the energy of available orbitals 4d, 5s and 5p increases is 5s < 4d < 5p and the total number of orbitals available are 9 and thus 18 electrons can be accommodated.

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a

Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1.

b

Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1.

c

Statement-1 is true, statement-2 is false

d

Statement-1 is false, statement-2 is true

answer is A.

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