Question

(b) a sn²+ ion? protons electrons

Explanation:

Step1: Determine the number of protons

The atomic number of tin (Sn) is 50. The number of protons in an atom or ion is equal to its atomic number. So, for \(Sn^{2 +}\), the number of protons \(= 50\).

Step2: Determine the number of electrons

A neutral Sn atom has 50 electrons. Since \(Sn^{2+}\) has a +2 charge, it has lost 2 electrons. So, the number of electrons \(=50 - 2=48\).

Answer:

protons: \(50\)
electrons: \(48\)