Arrange s,p and d subshells of a shell in the increasing order of effective nuclear charge `(Z_(eff))` experienced by the electron present in them.

Explanation

To arrange the s, p, and d subshells of a shell in increasing order of effective nuclear charge (Z_eff) experienced by the electrons present in them, we can follow these steps:

### Step 1: Understand Effective Nuclear Charge (Z_eff)
The effective nuclear charge (Z_eff) is the net positive charge experienced by an electron in an atom. It takes into account the total positive charge from the nucleus (atomic number, Z) and the shielding effect caused by other electrons.

### Step 2: Identify the Position of Subshells
The subshells s, p, and d have different distances from the nucleus:
- **s subshell**: Closest to the nucleus
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