Atoms + The Periodic Table

Question 1

What is the atomic number of an element?

Answer 1

The number of protons in the nucleus of an atom of a given element

Question 2

What letter denotes the atomic number?

Answer 2

Z

Question 3

What letter denotes the mass number?

Answer 3

A

Question 4

What is the mass number of an element?

Answer 4

The overall number of protons and neutrons in the nucleus of an atom of a given element

Question 5

What are isotopes?

Answer 5

Atoms with the same atomic numbers but different mass numbers. They have the same chemical behaviour, but different properties

Question 6

What are isotopes?

Answer 6

Atoms with the same atomic numbers but different mass numbers. They have the same chemical behaviour, but different properties

Question 7

Define atomic weight.

Answer 7

Weighted average of all the masses of an element’s individual isotopes taking only natural abundances intro account.

Question 8

What is the unit of atomic weight?

Answer 8

amu
Atomic Mass Unit

Question 9

What is the formula for atomic weight?