Question

What is the formula for the Calcium ion?

Answer 1

Metals:

• Metals are those elements, which tend to lose electrons to form positive ions i.e., cation.

Ion:

• When a neutral atom loses or gains electrons then an ion is formed.
• They have $1,2,\mathrm{or}3$electrons in their outermost shell.
• Calcium is metal because it has 2 electrons in its outermost shell which it could donate to form a positive ion.
• The formula for Calcium ion will be = ${\mathrm{Ca}}^{+2}$