Suppose the expected value for a mass is exactly one kilogram. A lab group checked the mass and made the following measurements:
2.01 kg, 2.02 kg, 1.99 kg, 1.97 kg

Which answer choice BEST describes these measurements?
A. accurate and precise
B. inaccurate and precise
C. accurate and imprecise
D. inaccurate and imprecise

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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

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock