Which is larger Ca or Ca2+

Ca is larger than the Ca2+ because Ca2+ has a greater positive charge and electrons repel the nucleus.

Ca

Explanation:

Ca is larger than Ca2+ because, in the periodic table, the atomic radius increases from top to bottom and from left to right. Also Ca has 2 more electrons than Ca2+ therefore, its atom is bigger because it has an extra shell.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

58750.08068 is the answer i think