A transition element X has the configuration [Ar]d4 in its + 3 oxidation state. Its atomic number is

Question

A transition element X has the configuration [Ar]d4 in its + 3 oxidation state. Its atomic number is (A) 25 (B) 26 (C) 22 (D) 19

Tardigrade Admin · Accepted Answer

Given, X=[Ar]d4 ∴ The complete configuration of the ion, X3+=1s2,2s2,2p6,3s23p6,3d4 ∴ X=1s2,2s2,2p6,3s2,3p6,3d54s2 ∴ The atomic number of the element is 25 and the element is Mn.

Q. A transition element X has the configuration $[A r] d^{4}$ in its $+ 3$ oxidation state. Its atomic number is

25

26

22

19

Given, $X = [A r] d^{4}$ $∴$ The complete configuration of the ion, $X^{3 +} = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2} 3 p^{6}, 3 d^{4}$ $∴$ $X = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 3 d^{5} 4 s^{2}$ $∴$ The atomic number of the element is 25 and the element is Mn.

Q. A transition element X has the configuration [Ar]d4 in its +3 oxidation state. Its atomic number is

25

26

22

19

Given, X=[Ar]d4 ∴ The complete configuration of the ion, X3+=1s2,2s2,2p6,3s23p6,3d4 ∴ X=1s2,2s2,2p6,3s2,3p6,3d54s2 ∴ The atomic number of the element is 25 and the element is Mn.

Q. A transition element X has the configuration $[A r] d^{4}$ in its $+ 3$ oxidation state. Its atomic number is

Given, $X = [A r] d^{4}$ $∴$ The complete configuration of the ion, $X^{3 +} = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2} 3 p^{6}, 3 d^{4}$ $∴$ $X = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 3 d^{5} 4 s^{2}$ $∴$ The atomic number of the element is 25 and the element is Mn.