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Q)

Which of the following statements regarding the electron configuration in transition metals are TRUE?

(1) The general electron configuration for Period 5 is $1s^22s^22p^63s^23p^64s^23d^{10}4p^64s^24d^x$

(2) Zn, Cd and Hg are not considered d-block elements because d-orbitals are completely filled in the ground state as well as in its oxidized state

(3) Cu, Ag and Au should not be considered as a d-block element because they don't have partially filled d-orbitals

(4) The n value of the d sublevel of a transition element is one less than the period number

$\begin {array} {1 1} All\; statements\; are\; true \\ \text{Only (2), (3) and (4) are true, (1) is false} \\ \text{Only (2) and (4) are true, (1) and (3) are false} \\ \text{Only (2) and (3) are true, (1) and (4) are false} \end {array}$

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