Element Na when not bonded to another element has an oxidation number of ?
A)2 B) 1 C) 0 D) 4

2b2t

explanation:

2b2t

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

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante