A) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}},\]\[5{{s}^{2}},5{{p}^{6}}5{{d}^{6}},6{{s}^{2}}\]
B) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}},\]\[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}\]
C) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\]\[5{{s}^{2}}5{{p}^{6}}\]
D) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{f}^{14}},\]\[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}}\]
Correct Answer: C
Solution :
Key Idea: Convert these configurations to 2, 8, 18 scheme to find which of them has noble gas configuration that is 8 electrons in valence shell. (a) 2, 8, 18, 18, 14, 2 (b) 2,8,18, 18, 9, 2 (c) 2, 8, 18, 18, 8 (d) 2, 8, 18, 16, 1 (configuration is wrong) \[\because \] only (c) has 8 electrons in valence shell.
You need to login to perform this action.
You will be redirected in
3 sec
