The ground state electron configuration for Ti²⁺: [Ar] 3d²
<h3>Further explanation
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In an atom there are levels of energy in the shell and sub shell
This energy level is expressed in the form of electron configurations.
Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d and f. The maximum number of electrons for each sub shell is
• s: 2 electrons
• p: 6 electrons
• d: 10 electrons and
• f: 14 electrons
Charging electrons in the sub shell uses the following sequence:
<em>1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.
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Determination of electron configurations based on principles:
• 1. Aufbau: Electrons occupy orbitals of the lowest energy level
• 2 Hund: electrons fill orbitals with the same energy level
• 3. Pauli: no electrons have the same 4 quantum numbers
Ti or Titanium is a transition element with atomic number 22
so the electron configuration of the element Ti :
1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d² or can be written with the symbol of the noble element Ar:
[Ar] 3d² 4s²
The cation of Ti²⁺ shows that the element Ti releases 2 electrons so that the electron configuration :
[Ar] 3d² <em>(the electrons are removed first from the largest n, 4s)
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<h3>Learn more
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