A) 14 elements in the sixth period (at. no. 90 XJ to 103) that have 4f-subshell
B) 14 elements in the seventh period (at. no. 90 to 103) that have 5f-subshell
C) 14 elements in the sixth period (at. no. 58 to 71) that have 4f-subshell
D) 14 elements in the seventh period (at. no. 58 to 71) that have 4f-subshell
Correct Answer: C
Solution :
14 lanthanoids in VI period (58 to 71).
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