Which should be done when handling questioned documents?
choose all answers that are correct.
photocopy on a copier by using an autofeeder.
handle the document as little as possible.
protect the documents from excessive light.
store the document in plastic bags.

explanation:

i did this but i forgot how to do it

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