Question

determine the true statements. check all that apply. the li+ ion contains 3 protons and 2 electrons. the se2- ion contains 32 protons and 34 electrons. the cs+ ion contains 55 protons and 56 electrons. the fe2+ ion contains 29 protons and 26 electrons. submit request answer part b complete previous part(s) part c complete previous part(s) part d complete previous part(s) provide feedback

Explanation:

Step1: Analyze \(Li^{+}\)

For \(Li^{+}\), the atomic number of \(Li\) is \(3\), so protons \(= 3\). Since it has a \(+1\) charge, electrons \(=3 - 1=2\).

Step2: Analyze \(Se^{2 -}\)

The atomic number of \(Se\) is \(34\), so protons \(=34\) (not \(32\)). For \(Se^{2 -}\), electrons \(=34 + 2 = 36\) (not \(34\)).

Step3: Analyze \(Cs^{+}\)

The atomic number of \(Cs\) is \(55\), so protons \(=55\). Since it has a \(+1\) charge, electrons \(=55 - 1 = 54\) (not \(56\)).

Step4: Analyze \(Fe^{2+}\)

The atomic number of \(Fe\) is \(26\), so protons \(=26\) (not \(29\)). For \(Fe^{2+}\), electrons \(=26 - 2=24\) (not \(26\)).

Answer:

The \(Li^{+}\) ion contains 3 protons and 2 electrons.