Question #33d8c

1 Answer
Oct 14, 2015

Answer:

The answer is (c) #9#

Explanation:

Each electron shell corresponds to a different energy level, which is represented by the principal quantum number, #n#.

The #M# shell designates the third energy level, for which #n=3#.

https://principlequantumnumber.wordpress.com/

The relationship between the principal quantum number and the number of orbitals is given by the equation

#"no. of orbitals" = n^2#

This equation will produce

#n = 1 implies "no. of orbitals" = 1^2 = 1#

#n = 2 implies "no. of orbitals" = 2^2 = 4#

#n=3 implies "no. of orbitals" = 3^2 = 9#

The #M# shell will thus contain a total of #9# orbitals

  • one 3s-orbital
  • three 3p-orbitals
  • five 3d-orbitals