Which of the following statement (s) is (are) correct ?(a) The elect

1.	Which of the following statement (s) is (are) correct ?(a) The electronic configuration of Cr is [Ar] 3d5 4s1 (Atomic number of Cr = 24).(b) The magnetic quantum number may have a negative value(c) in silver atom, 23 electrons have a spin of one type and 24 of the opposite type. (Atomic number of Ag = 47(d) The oxidation state of nitrogen in HN3 is -3
Answer» Correct option (a) (b) (c) Explanation: (a) ₂₄Cr =1s²,2s² _,2p⁶,3s², 3p⁶ ,3d⁵,4s¹, = [Ar] 3d⁵, 4s¹. (b) For magnetic quantum number (m) negative values are possible. For s-sub-shell : l = 0, hence m = 0 For p-sub-shell : I = 1, hence m = - 1, 0, + 1 (c) ₄₇Ag = 1s²,2s², 2p⁶,3s², 3p⁶,3d¹⁰,4s², 4p⁶ 4d¹⁰, 5s¹ Hence, 23 electrons have a spin of one type and,24 of the opposite type. (d) Oxidation state of N in HN₃ is -1/3. CORRECT ANSWERS ----> OPTION (A) since Chromium attains the given electronic configuration to attain the stability in its ground state. OPTION (B) if l = 1 , then m = (-1,0,1) ; l = 2 , m = (-2,-1,0,1,2) and so on. OPTION (C) since E.C. of Silver ----> [Kr]4d¹⁰5s¹

Which of the following statement (s) is (are) correct ?(a) The electronic configuration of Cr is [Ar] 3d5 4s1 (Atomic number of Cr = 24).(b) The magnetic quantum number may have a negative value(c) in silver atom, 23 electrons have a spin of one type and 24 of the opposite type. (Atomic number of Ag = 47(d) The oxidation state of nitrogen in HN3 is -3

Answer»

Correct option (a) (b) (c)

Explanation:

(a) ₂₄Cr =1s²,2s² _,2p⁶,3s², 3p⁶ ,3d⁵,4s¹,

= [Ar] 3d⁵, 4s¹.

(b) For magnetic quantum number (m) negative values are possible.

For s-sub-shell : l = 0, hence m = 0

For p-sub-shell : I = 1, hence m = - 1, 0, + 1

Hence, 23 electrons have a spin of one type and,24 of the opposite type.

(d) Oxidation state of N in HN₃ is -1/3.

CORRECT ANSWERS ---->

OPTION (A) since Chromium attains the given electronic configuration to attain the stability in its ground state.

OPTION (B) if l = 1 , then m = (-1,0,1) ; l = 2 , m = (-2,-1,0,1,2) and so on.

OPTION (C) since E.C. of Silver ----> [Kr]4d¹⁰5s¹