You are given the electronic configuration of five neutral atoms - AB, B, C, D and E
` A - 1s^(2) 2s^(2) 2p^(6) 3s^(2), B - 1s^(2), 2s^(2) 2p^(6) 3s^(1), C - 1s^(2) 2s^(2) 2p^(1) , D- 1s^(2) 2s^(2) 2p^(5), E - 1s^(2) 2s^(2) 2p^(6)`
Write the empirical formula for the substance containing (i) A and D (ii) B and D (iii) only D
(iv) only E ?

Explanation

To solve the problem, we need to determine the empirical formulas for the combinations of the given atoms based on their electronic configurations. Let's analyze each atom's electronic configuration and deduce their valence electrons.

1. **Atom A**: 1s² 2s² 2p⁶ 3s²
- Valence Electrons: 2 (from 3s²)

2. **Atom B**: 1s² 2s² 2p⁶ 3s¹
- Valence Electrons: 1 (from 3s¹)

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