Verified Solution • 2025–26 Session moderate

QAIPM-2012-Ch-1709: NEET 2012 Chemistry - Class 11 AIPM-2012-Ch-1709 Solution: In a reaction A + B \( \) product rate is doubled when the…

In a reaction A + B →\rightarrow product rate is doubled when the concentration of B is doubled and rate increases by a factor of 8 when the concentration of both the reactants (A and B) are doubled rate law for the reaction can be written as rate = k[A][B]2k[A][B]^2 rate = k[A]2[B]2k[A]^2[B]^2 rate = k[A][B]k[A][B] rate = k[A]2[B]k[A]^2[B]

Multiple Choice Options

  • A Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.
  • B Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius.
  • C Atomic radius of the elements increases as one moves down the first group of the periodic table.
  • D Atomic radius of the elements decreases as one moves across from left to right in the 2 nd period of the periodic table.

Step-by-Step Verified Solution

When positive charge on the cation increases, effective nuclear charge increases. Thus atomic size decreases.

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