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?
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?
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1 Answer
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This is a Short Answer Type Questions as classified in NCERT Exemplar
Ans: (i) According to the electronic configuration, a total of 8 electrons must be present in the valence shell of an element. Element X has 4 valence electrons, so it will share the remaining 4 electrons for the formation of the bond, the molecular formula will be XH4 . The element Y has 5 valence shell electrons, so it will form 3 bonds and the formula will be YH3 . The element Z has 7 valence shell electrons, so it will form one bond with hydrogen and has the molecular formula H-Z .
(ii) Elements X, Y and Z having, 5 and 4 7 valence electrons respectively belongs
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