PATTERNS IN CHEMISTRY

The inert gases

• are mildly reactive

• are highly reactive

• are unreactive

The halogens are all

• unreactive non-metals

• highly reactive non-metals

• unreactive metals

• highly reactive metals

Choose ALL correct options.

The alkali metals are all

• unreactive metals

• highly reactive metals

• highly reactive non-metals

• stored under water

• stored under oil

Which of the following is misplaced ?

• hydrogen

• helium

• neon

• argon

Which is the odd one out ?

• sodium

• potassium

• iron

• lithium

What is meant by the "valence shell"

• The full shell of electrons

• The innermost shell of electrons

• The outermost shell of electrons

• None of the above

How many electrons are in the valence shell of sodium and lithium ?

• one

• two

• three

• four

How many electrons are in the valence shell of the halogens ?

• one

• two

• seven

• eight

What most characterises the inert gases ?

• They are all gases

• They are all coloured

• They are all used for balloons or lighting

• They all have full valence shells

Why does the periodic table of elements have the shape that it does ?

• The inventor was creative

• Why shouldn't it ?

• It groups the elements according to atomic number

• It groups the elements according to chemical reactivity