Lesson 2

Question 1

an electron orbiting the nucleus will have a unique set

- acts as a sort of address for each electron

Answer 1

four quantum numbers

Question 2

It refers to the distance of the electron from the nucleus.

It is also known as the shell.

Answer 2

Principal Quantum Number

Question 3

maximum number of electrons in a shell

Answer 3

2n squared

Question 4

n

Answer 4

Principal Quantum Number

Question 5

It describes the shape of the atomic orbital.

It is also known as the subshell or orbital angular momentum quantum number.

Answer 5

Azimuthal Quantum Number

Question 6

l(special chracter)

Answer 6

Azimuthal Quantum Number n-1

Question 7

s,p,d,f

Answer 7

l

Question 8

The number of orbitals in a subshell is given by the magnetic quantum number
The values -l to +l including 0
Each orbital (or possible number of m can only hold two electrons

Answer 8

Magnetic Quantum Number(m sub l)

Question 9

It indicates the spin of the electron or the direction at which it revolves around the nucleus.
Values are +1/2 and -1/2 only.

Answer 9

Electron Spin Quantum Number

Question 10

Aufbau Principle
Hund’s rule of maximum multiplicity
pauli exclusion principle(only 2 electron at

Answer 10

l

Question 11

valence electron

Answer 11

last electron