Although you have not provided the circled electron, I can help you with a wide explanation.
1) Atomic number of manganese is 25. That means that it has 25 protons and 25 electrons.
2) Those 25 electrons are distributed (electron configuration) as per the quantum rules:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
3) The most reasonable is that you have been asked to give the possible quantum numbers for an electron in the 4s or 3d.
4) Those are 7 electrons and these are their possible sets of quantum numbers: i) For the two electrons in 4s: n is the main energy level so n = 4 l tells the kind of orbital, which is s, so l = 0 ml is also 0 (it can be from -l to + l, so given that l i s0, ml is 0) ms: one is +/12 and the other is -1/2 (this is the spin number).
ii) For the 5 electrons in 3d
n = 3 l can be 0, 1, or 2 if l = 0, then ml = 0
if l = 1, then ml can be -1, 0 , or 1 (from - l to + l)
Water can be turned to ice if to cold gas if to hot ice can turn to water if to hot and stay the same if to cold gas will turn to water if to hot and freeze to ice if to cold and the pattern keeps going like that. hope this helps
Carbon dioxide can be the cause of burning carbon dioxide and a stove it depends on the heat of the flame in order for carbon dioxide to become carbon monoxide
The mass of the atom would change. With no atoms being there then the mass would possibly change. With no neutrons then the mass of the atom will decrease
