Answer:
Group 2A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Explanation:
The ocean hold 97 percent of earths water.
6.022×10^23 should be correct. Are there any options to choose from?
<u>Avogadros number</u>
Gases take the shape of their container and have no definite volume because they can diffuse indefinitely. Answer C.
A mole contains Avogadro’s number of particles of a substance.
