MCQ
Which statement is true about the transitional elements
- AThey are highly reactive
- ✓They show variable oxidation states
- CThey have low M.P.
- DThey are highly electropositive
✓
Answer
Correct option: B.
They show variable oxidation states
b
(b)They show variable oxidation state due to participation of $ns$ and $(n - 1)d$ electrons.
(b)They show variable oxidation state due to participation of $ns$ and $(n - 1)d$ electrons.
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
At constant temperature, the equilibrium constant $(K_p)$ for the decomposition reaction ${N_2}{O_4}$ $\rightleftharpoons$ $2N{O_2}$ is expressed by ${K_P} = \frac{{(4{x^2}P)}}{{(1 - {x^2})}}$, where $P = $ pressure, $x = $ extent of decomposition. Which one of the following statements is true
→Polarisation of electrons in acroline may be written as
Which of the following shows a metal being oxidised ?
The oxidation states of $'P'$ in $\mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{7}, \mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{5}$ and $\mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{6}$, respectively, are:
→The degree of hydrolysis of salt of weak acid and weak base in its $0.1\,M$ solution is found to be $50\%$. If the molarity of the solution of same salt is $0.5\,M$, then the percentage degree of hydrolysis of the salt should be ......... $\%.$
→For the reaction $2NOBr (g) \rightleftharpoons 2NO(g) + Br_2(g)$, if ${P_{B{r_2}}} = \frac{P}{9}$ at equilibrium and $P$ is total presssure, then find $\frac{{{K_P}}}{P}$ ?
→A solution of $Fe _{2}\left( SO _{4}\right)_{3}$ is electrolyzed for $'x'$ min with a current of $1.5\, A$ to deposit $0.3482\, g$ of $Fe$. The value of $x$ is $.......$. [nearest integer]
→Given : $1 \,F =96500\, C \,mol ^{-1}$
Atomic mass of $Fe =56\, g \,mol ^{-1}$
Permono sulphuric acid is known as
On balancing the given redox reaction,
→$aCr _2 O _7^{2-}+ bSO _3^{2-}( aq )+ cH ^{+}( aq ) \rightarrow 2 aCr ^{3+}( aq )+ bSO _4^{2-}( aq )+\frac{ c }{2} H _2 O ( l )$
the coefficients a, b and $c$ are found to be, respectively-
is
