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

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72