A metallic element forms an ion with unit charge. The ion has 10 electrons and 12 neutrons . What is the number of electrons, protons and neutrons in its neutral atom ? Represent the atom with atomic number and mass number.

Explanation

To solve the problem step by step, we need to determine the number of protons, neutrons, and electrons in the neutral atom of the metallic element based on the information provided about its ion.

### Step 1: Understand the Ion Configuration
The ion has a unit charge and contains 10 electrons. Since it has a unit positive charge, this means it has lost one electron compared to its neutral state.

**Hint:** Remember that a positive charge indicates the loss of electrons.

### Step 2: Determine the Number of Protons
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