Electron Structure and Arrangement

Question 1

What is the charge of an electron?

Answer 1

Negative

Question 2

Which subatomic particles are found in the nucleus of an atom?

Answer 2

Protons and Neutrons

Question 3

What are the charges of subatomic particles?

Answer 3

Protons: Positive
Neutrons: Neutral
Electrons: Negative

Question 4

How did Bohr theorise electron configuration in an atom?

Answer 4

Electrons exist in fixed orbits, called orbitals or energy levels

Question 5

How does quantum mechanics explain electron configuration?

Answer 5

Electrons do not move in set paths, but exist within a cloud. Within this cloud there are certain areas where electrons are more likely to concentrate.

Question 6

Energy level closest to the nucleus

Answer 6

• Maximum 2 electrons

- Lowest energy relative to other energy levels

Question 7

Outermost energy level

Answer 7

Valence shell

Question 8

Name for horizontal rows in the periodic table

Answer 8

Periods

Question 9

Name for vertical columns in the periodic table

Answer 9

Groups

Question 10

What piece of information can the periodic table group number give us about the electrons in these elements?

Answer 10

The number of electrons in the valence shell

Question 11

What information can we get from the periods in the periodic table?

Answer 11

The number of occupied electron shells in an atom

Question 12

Maximum number of electrons in the second and third electron shells

Answer 12

8