Lesson 3

Question 1

What is the rule for positioning electrons

Answer 1

In the second and onwards shells the electrons are placed at 12 o’clock three o’clock six o’clock and nine o’clock before being paired in the same order

Question 2

Atoms with electric charges are called ____

Answer 2

Atoms with electric charges are called ions

Question 3

What is an ion with a positive charge called

Answer 3

Cations

Question 4

What is an ion with a negative charge called

Answer 4

Anions

Question 5

What are isotopes

Answer 5

Isotopes are atoms which have the same number of protons (so they are atoms of the same element) so they have different number of neutrons (so they have different mass number)