The quantum numbers of the last electron which enters an element are- - -3- m - 2 and s - - 1-2- In which block of the periodic table is this element present-

The correct option is D f Block ℓ nbsp; nbsp; =3 nbsp;for "f" subshellm= 2, s = +1/2so it is of f block ...

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Standard XII

Chemistry

Electronic Configuration

The quantum n...

Question

The quantum numbers of the last electron which enters an element are.
$ℓ = 3, m = 2$ and $s = + 1 / 2$ . In which block of the periodic table is this element present.

s-Block

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p-Block

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d-Block

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f-Block

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Solution

The correct option is D f-Block
$ℓ$ =3 for "f" subshell
m= 2, s = +1/2
so it is of f block

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Similar questions

(i) Comprehension given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option. In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz s, p, d, and f.
The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. In accordance with the Aufbau principle, the seven periods (1 to 7 ) have 2, 8, 8, 18, 18, 32, and 32 elements respectively.
The seventh period is still incomplete. To avoid the periodic table being too long , the two series of f-block elements, called lanthanoids and actionoids are placed at the bottom of the main body of hte periodic table
The element with atomic number 57 belongs to
(a) s- block ( b) p-block (c) d- block (d) f- block

(ii) The last element of the p - block in 6th period is represented by the outermost electronic configuration.
(a) $7 s^{2} 7 p^{6}$ (b) $5 f^{14} 6 d^{10} 7 s^{2} 7 p^{0}$
(c) $4 f^{14} 5 d^{10} 6 s^{2} 6 p^{6}$ (d) $4 f^{14} 5 d^{10} 6 s^{2} 6 p^{4}$

(iii) Which of the elements whose atomic numbers are given below, cannot be accommodated in the present set up of the long frm of the periodic table?
(a) 107 (b) 118 (c) 126 (d) 102

(iv) The electronic configuration of the element which is just above the element with atomic number 43 in the same group is .....
(a) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{2}$
(b) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{3} 4 p^{6}$
(c) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6} 4 s^{2}$
(d) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{7} 4 s^{2}$

(v) The elements with atomic numbers 35, 53 and 85 are all ..
(a) noble gases (b) halogens (c) heavy metals (d) light metals

Q. The atomic number of an element 'X' is

16

. In the modern periodic table the element 'X' belongs to this block and period.

Q. To which block is an element, having electronic configuration

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

, related in the periodic table?

Q. A _______ in s-block elements exists between adjacent elements which are located in the second and third period of the periodic table.

Q. An element of p-block in which last electron enters into s-orbital of valence shell instead of p-orbital is:

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The quantum numbers of the last electron which enters an element are.ℓ=3,m=2 and s=+1/2. In which block of the periodic table is this element present.

The correct option is D f-Blockℓ=3 for "f" subshellm= 2, s = +1/2so it is of f block

The quantum numbers of the last electron which enters an element are.
$ℓ = 3, m = 2$ and $s = + 1 / 2$ . In which block of the periodic table is this element present.

The correct option is D f-Block
$ℓ$ =3 for "f" subshell
m= 2, s = +1/2
so it is of f block