Which of the following is a characteristic of science? it asks questions about the natural world it asks questions about that cannot be tested it is done by only one scientist at a time it usws options to make conclusions

it asks questions about the natural world it asks questions about that cannot be tested it is done by only one scientist at a time it usws options to make conclusions

Explanation:

your answer would be a. 12.5 kg

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.