Question

Which is mismatched regarding the position of the element as given below?
(1) X(Z = 89) - f block, 6th period
(2) Y(Z = 100) - f block, 7th period
(3) Z(Z = 115) - d block, 7th period
(4) Both (1) & (3)​

Answer 1

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Answer 2

Answer:

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