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The correct order of decreasing energy for the electrons whose quantum numbers, $n$ and $l$ are given below, is

(A) $n = 5$ and $ℓ = 2$

(B) $n = 5$ and $ℓ = 0$

(C) $n = 4$ and $ℓ = 3$

(D) $n = 4$ and $ℓ = 1$

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Important Questions on Atomic Structure

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The electronic configuration which obeys Hund's rule for the ground state of carbon atom is

MEDIUM

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

G d (64)

has __ unpaired electrons with sum of its spin as __.

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The maximum number of electrons that can be filled in the shell with the principal quantum number

n = 4

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The total number of orbitals associated with the principal quantum number

5

is:

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

How many electrons can fit in each orbital for which

n = 3

and

l = 1

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Aqueous solution of which of the following salts will not contain ions with the electronic configuration

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Which statement is incorrect for the periodic classification of elements?

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The orbital nearest to the nucleus is

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The element with

Z = 120

(not yet discovered) will be a/an

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The number of valence electrons in an atom with electronic configuration

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The group number, number of valence electrons, and valency of an element with atomic number

15,

respectively, are:

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?

(At. No. Z =

22

)

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

4 d, 5 p, 5 f

and

6 p

orbitals are arranged in the order of decreasing energy. The correct option is:

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Which one of the following statements is wrong?

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The number of unpaired electrons in

{Ni}^{2 +}

(atomic number

= 28

) are

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Which of the following electron is most tightly bound to the nucleus?

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

Energy associated with the first orbit of

{He}^{+}

EASY

Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The element which readily forms an ionic bond has the electronic configuration

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

The number of

d

-electrons in

{Fe}^{2 +} (Z = 26)

is not equal to the number of electrons in which one of the following?

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Science>Chemistry>Atomic Structure>Electronic Configuration of Elements

If the principal quantum number

n = 6,

the correct sequence of filling of electrons will be:

The correct order of decreasing energy for the electrons whose quantum numbers, n and l are given below, is (A) n=5 and ℓ=2 (B) n=5 and ℓ=0 (C) n=4 and ℓ=3 (D) n=4 and ℓ=1

Important Questions on Atomic Structure

Learn and Prepare for any exam you want !

The correct order of decreasing energy for the electrons whose quantum numbers, $n$ and $l$ are given below, is

(A) $n = 5$ and $ℓ = 2$

(B) $n = 5$ and $ℓ = 0$

(C) $n = 4$ and $ℓ = 3$

(D) $n = 4$ and $ℓ = 1$