<h2>Answer: c
. Alkaline earth metals (Group 2)</h2><h3>Explanation:</h3>
Group 2 metals have 2 electrons in their outer shell. These two electrons are usually found in the s orbital, hence the s².
Which term best describes the role of hydrogen gas in the formation of a water molecule?
2 answers:
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Answer:
Specific gravity of mercury is 13.56 and it is an unit-less quantity.
Explanation:
Mass of the mercury = m = 607.0 lb = 275330.344 g
1 lb = 453.592 g
Volume of the mercury = v =
Density of the mercury = d=
d = 13.56 g/mL
Specific gravity of substance = Density of substance ÷ Density of water
Specific gravity of mercury :
(unit-less quantity)