atomic structure and periodic Questions Set 5

Which of the following elements is a transition metal?

• lead

• phosphorus

• palladium

• potassium

Which subatomic particle has no charge?

• atom

• electron

• neutron

• proton

Which of the following elements is the least reactive?

• argon

• helium

• neon

• they are all unreactive

How many electrons are there in an atom of boron?

• 5

• 6

• 11

• 16

Tags

NGSS.MS-PS1-1

What is the electronic structure of an atom of aluminium?

• 2, 3

• 2, 8, 3

• 2, 8, 4

• 2, 2, 7

Tags

NGSS.MS-PS1-1

Which statement about the elements in Group 1 is not correct?

• they are all very reactive

• they all have one electron in their outer shell

• their atomic mass increases as you go down the group

• they form diatomic molecules

What does a compound contain?

• atoms of the same element with different numbers of neutrons

• only one type of atom

• two or more elements chemically combined together

• two or more substances not chemically combined together

Tags

NGSS.MS-PS1-1

Chlorine exists naturally as two isotopes, ³⁵Cl and ³⁷Cl. The abundance of ³⁵Cl is 76% and the abundance of ³⁷Cl is 24%. What is the relative atomic mass of chlorine to 3 significant figures?

• 35.2

• 35.5

• 36.2

• 36.5

Tags

NGSS.MS-PS1-2

Which separation method would be used to separate a mixture of dyes in coloured ink?

• chromatography

• filtration

• fractional distillation

• simple distillation

Which of the following elements would produce positive ions when it reacts?

• carbon

• hydrogen

• magnesium

• nitrogen