In what respect does an atom of magnesium differ from a magnesium ion (mg^{2+})?
(a)the ion has a more stable electronic arrangement than the atom.
(b)the positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom.
(c)the ion has two more protons than the atom.
(d)the ion will react more readily with free cl₂.
(e)the ion has two more planetary electrons than the atom.
can anyone explain this one?

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.