Write the chemical symbols for three different atoms or atomic cations with 12 electrons.

2) Atomic number of aluminium (Al) is 13, it means that it has 13 protons and 13 electrons., but if it lost one electron, it will have 12 electrons and 13 protons and become aluminium cation Al⁺.

Electron configuration of aluminium cation: ₁₃Al⁺ 1s² 2s² 2p⁶ 3s².

3) Atomic number of silicon (Si) is 14, it means that it has 14 protons and 14 electrons., but if it lost two electrons, it will have 12 electrons and 14 protons and become silicon cation Si²⁺.

Electron configuration of silicon cation: ₁₄Si²⁺ 1s² 2s² 2p⁶ 3s².

mickymike92 mickymike92 · Answer 2 · 2022-01-31T17:15:27+01:00

Based on electronic configuration, the chemical symbol of three different atoms or atomic cations with 12 electrons are Mg, Al+ and Si2+.

What are chemical symbol of three different atoms or atomic cations with 12 electrons?

A neutral atom with 12 electrons is the magnesium atom.

The chemical symbol for magnesium is Mg.

Another atom or atomic cation that can have 12 electrons is the aluminium atom which has lost an electron to become the aluminium (i) ion, Al+.

Another atom or atomic cation with 12 electrons is silicon atom which has lost two electrons to become silicon (ii) ion, Si2+.

Therefore, based on electronic configuration, the chemical symbol of three different atoms or atomic cations with 12 electrons are Mg, Al+ and Si2+.

Learn more about electronic configuration at: https://brainly.com/question/26084288