MCQ
Which of the following element has highest metallic character
Element $-$ $IP$
- A$P-17\,eV$
- ✓$Q-2\,eV$
- C$R-10\,eV$
- D$S-13\,eV$
✓
Answer
Correct option: B.
$Q-2\,eV$
b
$\begin{array}{ll} Al \rightarrow & 933\,K \\ Ga \rightarrow & 303\,K \\ In \rightarrow & 430\,K \\ Se \rightarrow & 490\,K \end{array}$
$\begin{array}{ll} Al \rightarrow & 933\,K \\ Ga \rightarrow & 303\,K \\ In \rightarrow & 430\,K \\ Se \rightarrow & 490\,K \end{array}$
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
In which of following reaction $K_p > K_c$ at $10\ K$ temperature
→Which of the following is true for given reaction
→$R - H + {X_2}\xrightarrow{{hv}}R - X + H - X$
Consider the following reactions
→$M{e_3}SiCl\xrightarrow{{{H_2}O}}A$
$M{e_3}SiCl_2\xrightarrow{{{H_2}O}}B$
$MeSiCl_3\xrightarrow{{{H_2}O}}C$
$(A), (B)$ and $(C)$ are known as ____,____, and ____ respectively in silicones formation
Which one of the following is not an intermediate in the generally accepted mechanism for the reaction shown below ?
→$\begin{matrix}
O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{F}_{3}}\,C\,OH+C{{H}_{3}}\,CH\,C{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH \\
\end{matrix}\xrightarrow{{{H}_{2}}S{{O}_{4}}}\begin{matrix}
O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{F}_{3}}\,C\,OCH\,C{{H}_{3}}+{{H}_{2}}O \\
|\,\,\,\,\,\,\,\,\,\,\,\, \,\,\,\, \\
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$
The elements which occupy the peaks of ionisation energy curve, are
With the help of following reactions, arrange metals $A, B, D$ and $E$ in decreasing order of their reactivity
→$(I)$ $B + AN{O_3} \longrightarrow BN{O_3} + A$
$(II)$ $A + HCl \longrightarrow ACl + \frac{1}{2}\,{H_2}$
$(III)$ $D + ECl \longrightarrow DCl + E$
$(IV)$ $D + HN{O_3} \longrightarrow {H_2}$ gas is not evolved
The uncertainties in the velocities of two particles, $A$ and $B$ are $0.05$ and $0.02\, ms^{-1}$ respectively. The mass of $B$ is five times to that of the mass of $A$. What is the ratio of uncertainties $\frac{{\Delta {x_A}}}{{\Delta {x_B}}}$ in their positions ?
→In presence of light toluene on reaction with chlorine gives
The number of $S-S$ , $S-O-S$ and $O-H$ linkages in a molecule of pyrosulphurous acid are respectively
→The major product obtained when this substrate is subjected To $E_2$ reaction under the treatment of potassium tert. butoxide
→