An element with the electronic configuration $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$ lies in the:

s-block II-A group

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d-block III-B group

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f-block III-B group

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d-block VIII group

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Solution

The correct option is C f-block III-B group
The element with the electronic configuration $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$ is Gadolinium (Gd). It is a lanthanoid and lies in the f-block, IIIB group.
Option (C) is correct.

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Similar questions

Q. The electronic configuration of the atom of an element X is 2, 8, 4. In modern periodic table, the element X is places in :

(a) 2nd group
(b) 4th group
(c) 14th group
(d) 8th group

_{90} T h^{232}

belongs to III group. It emits an

α

-particle. The daughter element belongs to

Match the following statements

$\begin{matrix} (a)f block elements & (i) G r o u p 1 a n d 2 (b)d block elements & (i i) G r o u p 13 t o 17 (c)p block elements & (i i i) G r o u p 3 t o 12 (d)s block elements & (i v) L a n t h a n i d e s a n d A c t i n i d e s \end{matrix}$

Q. Match the atomic numbers given in column I with the block in which the element is placed in column II and mark the appropriate choice.

Column I (Atomic Number)	Column II (Block)
(A) 62	(i) d-block
(B) 47	(ii) p-block
(C) 56	(iii) f-block
(D) 53	(iv) s-block

Q. Consider the following statements:
(I) Rutherford name was associated with the development of periodic table.
(II) A metal M having electronic configuration

1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 3 d^{10}, 4 s^{1}

is d-block element.
(III) Diamond is not an element.
(IV) The electronic configuration of the most electronegative element is

1 s^{2}, 2 s^{2}, 2 p^{5}

Select the correct option.

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An element with the electronic configuration [Xe]4f75d16s2 lies in the:

The correct option is C f-block III-B groupThe element with the electronic configuration [Xe]4f75d16s2 is Gadolinium (Gd). It is a lanthanoid and lies in the f-block, IIIB group.Option (C) is correct.

An element with the electronic configuration $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$ lies in the:

The correct option is C f-block III-B group
The element with the electronic configuration $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$ is Gadolinium (Gd). It is a lanthanoid and lies in the f-block, IIIB group.
Option (C) is correct.