MCQ
A covalent bond is likely to be formed between two elements which
- ✓Have similar electronegativities
- BHave low ionization energies
- CHave low melting points
- DForm ions with a small charge
✓
Answer
Correct option: A.
Have similar electronegativities
a
A covalent bond is possible between Similar and Dissimilar atoms.
A covalent bond is possible between Similar and Dissimilar atoms.
Two atoms with same electronegativity or similar electronegativity can form a covalent bond.
For example, $2 H$ atoms combine to form a covalent bond in hydrogen molecule.
Also, one $C$ atom combines with $4 H$ atoms to form four $C - H$ covalent bonds in methane.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The electronic configuration of four elements are
→$(I)\,[Xe]\, 6s^1$ $(II)\,[Xe]\,4f^{14}\,5d^1\,6s^2$
$(III)\,[Ar]\,4s^2\,4p^5$ $(IV)\,[Ar]\,3d^7,\,4s^2$
Select the incorrect statement about these elements
The equation
→$k =\left(6.5 \times 10^{12} \,s ^{-1}\right) e ^{-26000 K / T }$
is followed for the decomposition of compound $A$. The activation energy for the reaction is $.....\,kJ$ $mol ^{-1}$. [nearest integer]
(Given: $R =8.314 \,J\, K ^{-1}\, mol ^{-1}$ )
The freezing point of a $4\%$ by weight aq. solution of $A$ is equal to the freezing point of $10\%$ by weight aq. solution of $B$. If the molecular weight of $A$ is $60$ then the molecular weight of $B$ is
→Which of the following reagents and conditions convert benzene to chloro-benzene :
Which of the following can show geometrical isomerism :-
Which of the following compounds would you expect to be strongest carbon acid ?
In a reaction of aniline a coloured product $C$ was obtained.
→The structure of $C$ would be
Which of the following is the strongest base
In conversion of lime-stone to lime,
→$CaCO _{3}( s ) \rightarrow CaO ( s )+ CO _{2}( g )$ the values of $\Delta H ^{\circ}$ and $\Delta S^{\circ}$ are $+179.1 kJ mol ^{-1}$ and $160.2\,J / K$ respectively at $298 \,K$ and $1 \,bar$. Assuming that $\Delta H ^{\circ}$ and $\Delta S ^{\circ}$ do not change with temperature, temperature above which conversion of lime-stone to lime will be spontaneous is ........... $K$
Which of the following attacks glass