Question 31. What does one realize by bond pairs and lone pairs of electrons? Illustrate by giving 1 example of Each and every sort.
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Phosphorus atom is sp3 d hybridized inside the enthusiastic state. These orbitals are filled by the electron pairs donated by five Cl atoms as:
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electron achieve enthalpy is destructive or beneficial it depends upon the nature on the component. Such as. For halogens it is extremely adverse, simply because they can obtain the noble gasoline configuration by accepting an additional electron.
Determination of pH of some solutions received from fruit juices, Option of regarded and diverse concentrations of acids, bases and salts applying pH paper or universal indicator.
Reply: The elements of Group I have just one electron of their respective valence shells and therefore have a solid inclination to get rid of this electron. The tendency to lose electrons in turn, relies upon on the ionization enthalpy. For the reason that ionization enthalpy decreases down the team thus, the reactivity of team one CBSE Class 11 Chemistry factors improves in the identical purchase Li < Na < K < Rb < Cs.
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In distinction, the elements of team seventeen have 7 electrons within their respective valence shells and thus have strong inclination to accept yet one more electron to make steady configuration. It's connected with electron achieve enthalpy and electronegativity. Due to the fact both equally of them decreases down the team, the reactivity thus decreases.