2 Draw circles around the examples below that are non-metals. chlorine
silver
helium
carbon
iron
mercury
calcium
neon
sodium
sulfur
gold
zinc

Chlorine

Carbon

Sulphur

Rest all are metals.

More to know -

Silver metal is use in jewellery

helium is present is atmosphere ( it is harmful for living being )

Carbon is use in wires

Iron is uses in many articles like ships , Iron nail

Calcium is use to purify water

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.