MHT CET 2022 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2022

What is the position of copper in modern periodic table?

(A)Period – 5, Group - 9
(B)Period – 4, Group - 11Correct
(C)Period – 4 ,Group - 10
(D)Period – 3, Group - 9

Answer: (B)

Solution

Copper has atomic number 29 and configuration . The highest principal quantum number is 4, so it lies in period 4. For d-block elements the group number is (number of d electrons +

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Question ID VK-094135