Use the exponential notation to express the physical quantities a. V= 15. 50 ml to L

b. M= 5. 00mg to g

c. M= 2000 to g

d. Λ= 256. 4nm to m

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

i dont know the answe