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The cation Ca(2+) exist in many compounds, for example in salts.
Ca(2+) and Br- are common ions; the neon ion probable doesn't exist.
Ca2+ and Br- obviously must form, CaBr2 Calcium bromide
They have the same number of electrons. A neutral Ca atom would have 20 electrons but because it is a Ca2+ ion it only has 18 electrons (the same as Ar).
They have the same electron configuration as argon, which means they are isoelectronic with argon.
They have the same electron configuration as argon, which means they are isoelectronic with argon.
Ca2 is basically two Ca's so it's larger (the plus doesn't compensate)
They have the same electron configuration as argon, which means they are isoelectronic with argon.
Ca2+
An isotope of calcium
they cannot bond together, they are separate .
Calcium is in group 2. Therefore it's most probable charge is Ca2+.