The answer is 197
Hope I helped
Calcium has only two valence electrons in its shell. In order to agree with the octet rule it bonds with oxygen which has 6 valence electrons and with hydrogen which has 1 valence electron. Hope this answers the question. Have a nice day.
Answer:
In the desert, the climate is hot and dry, while in the tundra, it is cold and wet.
Explanation:
in the desert, plants need more water, while in the tundra, they have ice and snow
<span>the movement of the liquid in a thermometer is related to the motion of the molecules of the liquid when they are heated</span>
Total solar eclipses would be more common, because it would be easier for the moon to cover it, which is a solar eclipse.
