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Identify which of the following molecules can exhibit hydrogen bonding as a pure liquid
Identify which of the following molecules can exhibit hydrogen bonding as a pure liquid. Check all that apply.
CI O CI—C—CI Cl H H O I I H—N—N—H H O F—C—H F O 0 0 o II H—C—H O H-0-0—H O H—I
Expert Solution
Hydrogen bonding is an electrostatic force of attraction between H and highly electronegative atoms.
In CCl4 there is no H bonding because there is no hydrogen atom at all.
In NH2-NH2 due to the diffrence between electronegativity of N and H the N-H bond is polar hence H of one molecule form H bond with the N of other molecule.
In CF2H2 there is no bond between H and electro negative atom F, inorder to form H bond there must be atleast one such kind of bond. hence CF2H2 have no H bond.
In H2O there will be hydrogen bonds because of the presence of O-H bond.
In formalde there is no hydrogen bonding because of the absence of bond between H and electro negative atom O.
In H2O2 there is a possibility of H bonding but that bonding is not that much significant because these bonds are continuesly breaking and forming with other molecules.
In HI there is no H bonding because down the group of halogens electronegativity decreases.
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