Atomic structure

Question 1

Metals

Answer 1

1, 2 or 3 in outermost shells
- lose electrons to become stable

Question 2

Non-metals

Answer 2

4, 5, 6 or 7 in outermost shells
- gain electrons to become stable

Question 3

Isotopes

Answer 3

Different atoms of the same element having same atomic number but different mass number
- same number of protons & electrons but different neutron number

Question 4

Similarities of isotopes

Answer 4

• atomic number
• number of protons
• number of electrons
• chemical properties
• atomic radius
• electronic configuration

Question 5

Differences of isotopes

Answer 5

• mass number
• number of neutrons
• physical properties