EL3 - electron orbitals

Question 1

What is an atomic orbital?

Answer 1

They represent a region of space where there is a high probability of finding an electron

Question 2

According to what principle is it not possible to know the exact location of an electron within an atom?

Answer 2

Heisenberg uncertainty principle

Question 3

Which orbital

• is spherical
• each can told a maximum of 2 elections with opposite spins

Answer 3

s orbitals

Question 4

Which orbitals

• are dumbbell shaped
• have three orientations on each axis, x,y,z

Answer 4

p orbitals

Question 5

Each of the 3 p orbitals can hold a maximum of

Answer 5

2 electrons

Question 6

Which principle is used to determine the electron configuration of an atom or an ion?

Answer 6

The Aufbau principle

Question 7

The Pauli exclusion principle states:

Answer 7

An atomic orbital can hold two electrons with opposite spins

Question 8

The sum of all the power numbers of each orbital when written out corresponds to….

Answer 8

the number of electrons in the atom or ion

Question 9

Which atom has the electron configuration of

1s2, 2s2, 2p6, 3s1

Answer 9

Sodium (Na)

Question 10

After which noble gas can electron configurations be abbreviated to [x]…..

Answer 10

Neon

E.g Na = [Ne]3s1

Question 11

Which element is used an abbreviation in electron configurations after Neon?

Answer 11

Argon

Question 12

Orbitals are sub-shells to the main….

Answer 12

Energy levels

Question 13

Maximum electrons in d sub shell?

Answer 13

10

Question 14

Maximum electrons in f orbital?

Answer 14

14

Question 15

Which orbitals occupy by 2nd shell?

Answer 15

2s, 2p

Question 16

Which sub-shells occupy the 3rd shell

Answer 16

3s, 3p, 3d

Question 17

When electrons are lost, they are lost from the high occupied energy level, except for ….

Answer 17

The D-block elements.

Their electrons are removed from the 4s before the 3d