Isotopes - Unit 2

Question 1

What are isotopes

Answer 1

-one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with DIFFERENT atomic masses and physical properties.
-Every chemical element has one or more isotopes

Question 2

Important Factors of Isotopes

Answer 2

• They have the same number of protons
• Different atomic mass unit
• Different number of neutrons

Question 3

How to find protons

Answer 3

Atomic Number = number of protons
Mass = 1 atomic mass unit

Question 4

How to find neutrons

Answer 4

= Atomic mass - protons

Question 5

How to find electrons

Answer 5

It is based on the atomic number

Question 6

What is the charge of an atom

Answer 6

It is neutral.
Electrons = Protons

Question 7

What is the charge of ions

Answer 7

They can be positive or negative
For ex: Electrons = Protons - charge of the chemical element
Eg: Li = 2 e

Question 8

How to find average amu?

Answer 8

= sum of : atomic mass x (relative abundance / 100)