Question

Clipboard Font Paragraph Styles Voice Q1. Write the four quantum numbers of the first and last electrons in an Mg2+ ion. The atomic number of Mg is 12. 2 The net potential energy between two adjacent ions, En, may be represented by the sum of attractive

Answer 1

Quantum number is identification number of electron.

There are four quantum number

1.principal quantum number

2.azimuthal quantumnumber

3. magnetic quantum number

4 .spin quantum number

Quantum number is identification number of Olectron. There are four quartien number j) Principal quantum number Lo It is denoted by n. Lo It give ideas of size of atom. Lo It varies from t to. co. ii) Azimuthal quantum number Lo It is denoted by l Lo It give idea of shape af orbital Lo It varies from o to (0-1). ii) Magnetic quantum number Lo It is denoted by m. Lo It gives the idea of orientation of a sub shell in 3- Dimensional space. to It varies from al to lo (iv) Spin quantum number Lo It is denoted bys to It arises from spinning of an é to It Log out its axis spinning of a can be the ori e

Atomic Number: 12 Electronic configuration af Mg Mg (12) 0 15² 25² zp6 35² TD (11) 1/11 TL Electronic configuration of Mgalt Since +2 Charge on Mg means that 2e is taken out. so in electronic configuration , we will taken out a é from outer most orbit. so, electronic configercetion becomes; - 15² 252 zp6 35° 1st é - last é est é at Mg at lies in ts² n = 1 (for e=0 m=o s subshell, l=0) S=ts

for last é af mg 2t lies in a So, n=2 L=1 ma +1 Sa toto