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Quantum Numbers

The electrons...

Question

The electrons identified by quantum numbers n and l:
(1) n = 4, l = 1 (2) n = 4, l = 0
(3) n = 3, l = 2 (4) n = 3, l = 1
can be placed in order of increasing energy as

(4) < (2) < (3) < (1)

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(2) < (4) < (1) < (3)

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(1) < (3) < (2) < (4)

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(3) < (4) < (2) < (1)

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Solution

The correct option is A (4) < (2) < (3) < (1)
(1) 4p (2) 4s (3) 3d (4) 3p.
In order of increasing energies $3 p < 4 s < 3 d < 4 p$ i.e.,
(4) < (2) < (3) < (1) $.

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Similar questions

The electron identified by quantum number n and l

1. n=4, l=1 2. n=4, l=0

3. n=3, l=2 4. n=3, l=1

Can be placed in the order of increasing energy from the lowest to highest as

A) 4<2<3<1 B) 2<4<1<3

C) 1<3<2<4 D) 3<1<4<2

n

l

n = 4, l = 1

n = 4, l = 0

n = 3, l = 2

n = 3, l = 1

n

l

n = 4, l = 1

n = 4, l = 0

n = 3, l = 2

n = 3, l = 1

n

l

(i) n = 4, l = 1, (i i) n = 4, l = 0, (i i i) n = 3, l = 2, (i v) n = 3, l = 1

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