What differ the noble gases from all the other elements is that the noble gases have a full valence electron energy level which consists in 8 valence electrons
Answer:
Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic metre.
Answer:
+3
Explanation:
If an atom loses electrons, it becomes positive. Because silver loses 3 electrons, the charge becomes positive 3.
In our Solar System earth is the only planet to have life forms such as plants, animals and humans. We are also the only planet to have drinkable water on it. If you want to talk more about the atmosphere, we are the only planet to have an ozone layer or anything to trap heat and and protect from the harmful rays of the sun.
