What element does not prefer to react with other elements?

Noble gases does not prefer to react with other element, these belongs to group 18 in the periodic table.
The reason why they does not prefer to react with other elements is that they are most stable because they have maximum number of valence electrons in the outer shell.
Helium, neon, argon, krypton, xenon, and radon are the chemical elements which belongs to group 18.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom