Question

Write the electronic configuration of element having
atomic number(Z 20 and determine:
a. Number of sub shells
b. Number of electrons in sub shells having I = 0
c. Number of electrons in sub shells having (n+ 1) value
equal to 3 (if any)
d. Number of electrons in highest value of n

Answer 1

Answer:

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Explanation:

The electron configuration of an element describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.

A - There are 4 subshells, s, p, d, and f. Each subshell can hold a different number of electrons. The n number determines how many of the subshells make up the shell.

B - In each subshell (including s), there will be one orbital having m=0 which contains two electrons. Thus total number of subshells here is 7.

C - Each subshell can hold a different number of electrons. The n number determines how many of the subshells make up the shell. For example, the 1st shell is made up of 1 subshell, s. It can therefore contain only 2 electrons.

D - Quantum number for chromium. n. ...

Predict its number of subshells. Ans: Chromium has 10 subshells viz - 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 4f.

Number of electrons in subshell having l=0. ...

Number of electrons having n + ℓ value=3. ...

Number of electrons in highest value of n.