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Elements X, Y and Z have 4, 5 and 7 valence electrons respectively.
(i) Write the molecular formula of the compounds formed by these elements individually with hydrogen.
(ii) Which of these compounds will have the highest dipole moment?
Answers (1)
(i) The molecular formula of the compounds formed by X, Y and Z with hydrogen atom are XH4, YH3 and H-Z.
(ii) X, Y and Z have 4, 5 and 7 electrons respectively. These elements belong to second period and 14th, 15th and 17th groups. Electronegativity of elements increase across the period from group 1 to group17. Hence, H-Z will have the highest dipole moment.
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