Physical and chemical properties are listed below. 1. malleable 2. brittle 3. highly combustible 4. has free electrons Which two of these properties apply to most elements that conduct heat? 1 and 3 1 and 4 2 and 3 2 and 4

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!

if you need further assistance, let me know: )

~ trueboss72

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