Download App

Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
MCQ
The non $-$ radio active metal of $\ce{IIA}$ group having least first ionisation potential is :
  • A
    Radium
  • B
    Beryllium
  • C
    Calcium
  • ✓
    Barium
✓

Answer

Correct option: D.
Barium
On moving down the group of alkaline earth metals, the atomic size of metals increases and their first ionization enthalpies decreases from $\ce{Be}$ to $\ce{Ba}$. Thus non radioactive barium has least first ionization enthalpy among the non radioactive elements of group $\ce{IIA}.$

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

More "M.C.Q (1 Marks)" from Classification of Elements and Periodicity in Properties→Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Change in entropy for an ideal gas in reversible isothermal process is given by
→
At $363K,$ pure water has$[\mathrm{H}_2 \mathrm{O}^{+}]=10^{-6} \mathrm{M}$. The value of $\mathrm{K}_{\mathrm{w}}$ at this temperature will be :
→
How many neutrons are present in protium, deuterium and tritium respectively?
→
Select the correct statements of the following :- 

$(a)$ Effective nuclear charge for nitrogen is $3.90$

$(b)$ $IP$ of $Ne$ is more than $Na^+$

$(c)$ Order of electron negativity $sp > sp^2 > sp^3$

$(d)$ Order of acidic character $NH_3 < PH_3 < AsH_3$

→
On reaction of $38.1\, g$ iodine and $28.4\, g$ chlorine, mixture of $ICl$ and $ICl_3$ is obtained then total number of moles after reaction will be
→
The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is ......
→
Solubility of $B(OH)_2$ in water at $25\,^oC$ is $10^{-7}\ M$ . The value nearest to $K_{sp}$ is
→
Which one of the following compounds gives methane on treatment with water
→
Which is not true about borax?
→
Ozonolysis of  $2-$ methyl butene  $-2$  yields
→