I think that the answer is B, but I may be wrong...
Answer:
The answer is rather simple, if you understand electron configurations: the shape of the periodic table mimics the filling of the subshells with electrons. The shape of the periodic table mimics the filling of the subshells with electrons. ... The next two electrons, for Li and Be, would go into the 2s subshell.
Explanation:
Hey there!
The answer is C. Tectonic plates, with the most famous of earthquakes being a plate called the "Ring of Fire"
Hopes this Helps u :D
Answer:
I think its D
Explanation:
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Answer: There are four atoms
Explanation: mass of Cl atom is 35.45 amu
Amount of atoms n = m/M = 142 / 35.45 = 4
