Which set has the same number of unpaired electrons in their ground state

C l^{-}, F e^{3 +}, C r^{3 +}

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N a^{+}, M g^{2 +}, A l

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N a, P, C l

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N, P, V

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Solution

The correct option is D $N, P, V$
Electronic configuration is as follows:
$N$ - $1 s^{2} 2 s^{2} 2 p^{3}$
$P$ - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}$
$V$ - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{3}$
These elements have same number of unpaired of electrons i.e. 3 in each case.

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Similar questions

Question 17
Arrange the following elements in the order of their decreasing metallic character
Na, Si, Cl, Mg, Al

(a) Cl > Si >Al > Mg >Na
(b) Na >Mg >Al >Si > Cl
(c) Na > Al > Mg > Cl > Si
(d) Al > Na> Si > Ca> Mg

Which of the following is the correct sequence for atomic radii

Q. Consider the following orderings:

I

A l > S i > P > C l

I I

B e < M g < C a < S r

I I I

I < B r < C l < F

I V

{N a}^{+} < {M g}^{2 +} < {A l}^{3 +} < {S i}^{4 +}

Which of these give(s) a correct trend in ionization energy?

Q. The number of unpaired electrons in the ground state of

C l

atom

(a t o m i c n u m b e r = 17)

is:

Q. Which of the following orders are correct with respect to their size?

(1)

A l^{3 +} < M g^{2 +} < N a^{+} < F^{-}

(2)

T e^{2 -} > I^{-} > C s^{+} > B a^{2 +}

(3)

F e^{3 +} < F e^{2 +} < F e^{4 +}

(4)

M g > A l > S i > P

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Which set has the same number of unpaired electrons in their ground state

The correct option is D N,P,VElectronic configuration is as follows:N - 1s22s22p3P - 1s22s22p63s23p3V - 1s22s22p63s23p64s23d3These elements have same number of unpaired of electrons i.e. 3 in each case.

The correct option is D $N, P, V$
Electronic configuration is as follows:
$N$ - $1 s^{2} 2 s^{2} 2 p^{3}$
$P$ - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}$
$V$ - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{3}$
These elements have same number of unpaired of electrons i.e. 3 in each case.