In the second f transition series also known as the actinoid series the filling up of 5f orbitals begins with thorium (Z = 90) and ends up with lawrencium (Z = 103).
In the second f transition series also known as the actinoid series the filling up of 5f orbitals begins with thorium (Z = 90) and ends up with lawrencium (Z = 103).
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