A paisa coin is made up Al.Mg alloy and weighs 0.75 g. It has a square shape and its diagonal measures 17mm. It is electrically neutral and constants equal amounts of positive and negative charges . Treating the paisa coin made up of only Al, find the magnitude of equal number of positive and negative charges. What conclusion do you draw from this magnitude ?

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the number of aluminum atoms in the paisa coin.
Given:
- Mass of the paisa coin (m) = 0.75 g
- Atomic mass of Aluminum (M) = 26.9815 g/mol
- Avogadro's number (N_A) = 6.022 × 10^23 atoms/mol

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