Question

complete the following table for atoms or ions. atom or ion, number of protons, number of electrons, electrons lost/gained. k⁺. 12 p⁺, 10 e⁻. 8 p⁺, +2 e⁻ (gained). 10 e⁻, -3 e⁻ (lost). part h. write the ion (atom) that has 10 electrons and has lost 3 electrons. express your answer as a chemical symbol or an ion. part i complete previous part(s)

Explanation:

Step1: K⁺ protons

Potassium atomic number 19, so 19 p⁺.

Step2: K⁺ electrons

Lost 1 e⁻: 19 - 1 = 18 e⁻.

Step3: K⁺ lost/gained

Lost 1 e⁻: -1 e⁻ (lost).

Step4: 12 p⁺ atom/ion

12 p⁺ is Mg; 10 e⁻: lost 2 e⁻ → Mg²⁺.

Step5: 12 p⁺ lost/gained

Lost 2 e⁻: -2 e⁻ (lost).

Step6: 8 p⁺ electrons

Gained 2 e⁻: 8 + 2 = 10 e⁻.

Step7: 8 p⁺ atom/ion

8 p⁺ is O; gained 2 e⁻ → O²⁻.

Step8: 10 e⁻, -3 e⁻ protons

Protons = 10 + 3 = 13 (Al), ion: Al³⁺.

Step9: Part H ion

Al³⁺ has 10 e⁻ (13 - 3 = 10).

Answer:

Atom or Ion | Number of Protons | Number of Electrons | Electrons Lost/Gained
--- | --- | --- | ---
K⁺ | 19 p⁺ | 18 e⁻ | -1 e⁻ (lost)
Mg²⁺ | 12 p⁺ | 10 e⁻ | -2 e⁻ (lost)
O²⁻ | 8 p⁺ | 10 e⁻ | +2 e⁻ (gained)
Al³⁺ | 13 p⁺ | 10 e⁻ | -3 e⁻ (lost)

Al³⁺