Answer:
i think it's hydrogen reacts to oxygen
Ionic equation denotes to balance of all charges ,electrons , Hydrogens and oxygen and all atoms + oxidation nos.
Whereas balanced equation only locates balancing of atoms not anything else.
Remember that.. ionic equation depends upon acidic or basic medium
A
single oxygen has atomic number 8 that means the nuclei of all oxygen atoms
have eight protons. The number of minus-charged electron is two but the number
of electrons is 10. <span>To gain a minus two-charge ion, it
must have two more negative electrons than positive charged protons. With this,
the ion has 10 electrons, which give it a -2 net charge. </span>
Krypton is group 8 (or 18 depending on your choice of convention) and period 4.
Not sure what you mean by region, it's not a chemistry term in the context you're presenting. If you're asking for what type of element it is, it's a noble gas.