Here, we are required to determine which neutral atom is isoelectronic with MN+4.
- A neutrally charged atom which has equal number of electrons (isoelectronic) as Mn+4 is Scandium, Sc.
- First, a neutral atom is an atom characterized by equal number of electrons as protons.
- The number of protons in an atom is termed it's atomic number.
- Two chemical entities are said to be isoelectronic if they have equal number of electrons.
Therefore, for Manganese, Mn in its neutral charge state,
- no. of electrons = no. of protons = atomic number.
However, MN+4 means the loss of 4 electrons and therefore,
Ultimately, a neutrally charged atom which has equal number of electrons (isoelectronic) as Mn+4 is Scandium.
Scandium in its neutral charge state has atomic number 21, consequently it has 21 protons and 21 electrons.
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