Question

The subshell electronic configuration of some elements are given below. (symbols are not real)
A. 1s 2s22p 3s
B - 1s²2s²2p 3s 3p6452
C - 1s 2s 2p 3s 3p 3d 4s?
a) What is the atomic number of the element A?
b) Which subshell of the atom C has highest energy?
c) Find out group number and period number of the element c.​

Answer 1

Answer:

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