NEET-XII-Chemistry

c2022 year:2022

with Solutions - page 3
  • #34
    Given below are two statements : Statement I: The boiling points of the following hydrides of group `` 16 `` elements increases in the order - `` H _{2} O < H _{2} S < H _{2} Se < H _{2} Te \text {. } `` Statement II : The boiling points of these hydrides increase with increase in molar mass. In the light of the above statements, choose the most appropriate answer from the options given below :

    (A)Statement I is incorrect but Statement II is correct
    (B)Both Statement I and Statement II are correct
    (C)Both Statement I and Statement II are incorrect
    (D)Statement I is correct but Statement II is incorrect
    digAnsr:   A
    Ans : Hydrides of group `` 16^{\text {th }} ``
    `` \underset{\text{H-bond}}{H _{2} O} \,\,\, \underbrace{ H _{2} S \quad H _{2} Se \quad H _{2} Te }_{ H \text {-bond }} ``
    B.P. `` \rightarrow H _{2} S < H _{2} Se < H _{2} Te < H _{2} O ``