(i) write the electronic configurations of the following ions : (a) `H^(+)` (b) `Na^(+)` (c) `O^(2-)` (d) `F^(-)` ltbr. (ii) What are the atomic number of elements whose outermost electrons are represented by (a) `3s^(1)` (b) `2p^(3)` and (c) `3 d^(6)` ?

Explanation

To solve the question, we will break it down into two parts as given.

### Part (i): Write the electronic configurations of the following ions:

#### (a) \( H^+ \)
1. The atomic number of hydrogen (H) is 1, which means it has 1 electron.
2. The electronic configuration of neutral hydrogen is \( 1s^1 \).
3. The \( H^+ \) ion means that hydrogen has lost its only electron.
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