MCQ
Which shows variable valency
- A$s$ - block elements
- B$p$ - block elements
- ✓$d$ - block elements
- DRadioactive elements
✓
Answer
Correct option: C.
$d$ - block elements
c
$d$-block elements have empty inner orbitals, the electrons are added to incomplete inner shells. Thus they show variable valencies.
$d$-block elements have empty inner orbitals, the electrons are added to incomplete inner shells. Thus they show variable valencies.
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
' $A$ ' in the given reaction is
→The specific rate constant of a first order reaction depends on the
The number of electrons in the outermost shell of the $3d-$ transition elements generally remains
→What is relation between following molecules
Heat require to raise the temperature of $1$ mol of a substance by ${1\,^o}C$ is called
→Principle functional group in given compound is
→$\begin{array}{*{20}{c}}
{{H_3}C - C - O - C - C{H_2} - O - C{H_3}} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
Minimum freezing point will be shown by the solution of $0.1\,M$ concentration
→Which of the following statements is incorrect for $PCl_5$ ?
→Compound that will give positive Lassaigne's test for both nitrogen and halogen is
Calculate change in internal energy if $\Delta H = -92.2\, kJ, P = 40\, atm$ and $\Delta H = -1\,L.$ ......$kJ$
→