Download App

STD 11 - 3. Classification of elements and periodicity in properties — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
Which of the following has least ionization potential
  • A
    $Li$
  • ✓
    $Cs$
  • C
    $Cl$
  • D
    $I$
✓

Answer

Correct option: B.
$Cs$
b
(b) $Li$ and ${A_2}{B_3}$ belong to Ist group but $Cs$ has larger size, hence low nuclear attraction force, thus low ionization energy.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In the equilibrium $N_2 + 3H_2$ $\rightleftharpoons$ $2NH_3 + 22$ $k\,cal,$ the formation of ammonia is favoured by
→
What is electronic arrangement of metal atom/ion in octahedral complex with $d^4$ configuration, if ${\Delta _0} < $ pairing energy.
→
When acetaldehyde is heated with Fehling's solution, it gives a red ppt. of
→
Transition metals are often paramagnetic owing to
→
Consider the following standard electrode potentials ($E^o$ in volts) in aqueous solution

Element $M^{3+}/ M$ $M^+/M$
$Al$ $-1.66$ $+0.55$
$Tl$ $+1.26$ $-0.34$

Based on these data, which of the following statements is correct ?

→
Insulin is a protein which plays the role of
→
The rate of a certain biochemical reaction at physiological temperature $(T)$ occurs $10^{6}$ times faster with enzyme than without. The change in the activation energy upon adding enzyme is
→
Among the following, the optically inactive compound is
→
Which of the following magnetic moment values will corresponds to highest ionization energy for $Mn$
→
Glucose has difference from fructose in that it
→