Element Y is in the same group as X, but in the period below X (1
e) Give the chemical name for the element Y.
f) Compare the ionisation energy of these two atoms-which would have the larger
value? Give a reason for your answer.
g) Give the chemical formula of the compound that is formed when elementy
combines with chlorine,
h) Draw the Lewis structure to show the formation of the bond that has occurred in
this compound
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they are called fossil fuels

dipole moments occur when there is a separation of charge. they can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arise from differences in electronegativity. the dipole moment is a measure of the polarity of the molecule.

explanation:

in inorganic chemistry -dipole moment ( μ ) is the measure of net molecular polarity, which is the magnitude of the charge q at either end of the molecular dipole times the distance r between the charges. μ = q × r.