S orbital.
Group 1 elements have a general configuration , where n represents the highest occupied Principal Energy Level. For example, Lithium has the valence configuration whereas Cesium has . Both of them belong to Group 1 of Periodic Table.
Group 2 elements have a general configuration of . For example, Magnesium has as its outer shell configuration while Strontium has the same as .
We see that in both the cases, the outermost S orbital is being filled.
Answer:
ion is an electrically charged particle
Explanation:
there are 2 types of ions. anion an cation anion is negatively charged
cation is positively charged
You must know the masses of both objects and the gravitational constant used to calculate the gravitational force between the 2 objects.