Below are the choices that can be found elsewhre:
A. one
<span>B. two </span>
<span>C. three </span>
<span>D. four </span>
<span>E. none
The answer is D which is four </span><span> Ca has given up 2 electrons to sulfur with six which makes 8 e-, or 4 pairs.
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A. Large crystals. It’s inside the earth causing it to cool slower allowing more time to create crystals.
Time t=270 minutes=270/60=9/2 hours
distance s=63 miles
average speed v=s/t=63 ÷
=63×
=14 miles/hour