The energy of an orbital (like 2s) in an atom is determined by the effective nuclear charge, which is the net positive charge experienced by an electron in a multi-electron atom. The effective nuclear charge increases with the atomic number.

Here are the atomic numbers for the given elements:
- Sodium (Na): 11
- Lithium (Li): 3
- Potassium (K): 19
- Hydrogen (H): 1

Among these elements, Potassium (K) has the highest atomic number. Therefore, the 2s orbital of Potassium (K) will have the maximum energy.

Question

The energy of an orbital (like 2s) in an atom is determined by the effective nuclear charge, which is the net positive charge experienced by an electron in a multi-electron atom. The effective nuclear charge increases with the atomic number.

Here are the atomic numbers for the given elements:
- Sodium (Na): 11
- Lithium (Li): 3
- Potassium (K): 19
- Hydrogen (H): 1

Among these elements, Potassium (K) has the highest atomic number. Therefore, the 2s orbital of Potassium (K) will have the maximum energy.

Knowee AI · Accepted Answer

The energy of an orbital (like 2s) in an atom is determined by the effective nuclear charge, which is the net positive charge experienced by an electron in a multi-electron atom. The effective nuclear charge increases with the atomic number.

Here are the atomic numbers for the given elements:
- Sodium (Na): 11
- Lithium (Li): 3
- Potassium (K): 19
- Hydrogen (H): 1

Among these elements, Potassium (K) has the highest atomic number. Therefore, the 2s orbital of Potassium (K) will have the maximum energy.

Which among the following elements will have maximum energy for 2s orbital?NaLiKH

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