ANSWER THE FOLLOWING QUESTIONS 1. The electronic configuration of elements X and
Y are as:
X: 2, 8, 8, 1 : Y: 2,7
(a) Write the formula of the compound formed
when they combine.
(b) Name the type of bonding involved.
(c) Will the resulting compound be soluble in
water?
(d) Will the compound have a high or low
melting point?
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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.