The symbol of ion is given as Ca+2 . Write the name of the element, number of protons and electrons in the ion. Write the number of electrons gained/lost.
Open in App
Solution
The given element is calcium.
Number of protons = 20 since atomic number does not change when atoms gain/lose electrons.
Number of electrons in a neutral atom of calcium is 20.
Since the charge on Ca is +2, it has lost two electrons.
Hence the total number of electrons in Ca+2 =(20-2)=18.