MCQ
Dobereiner traids is
- A$Na$, $K$, $Rb$
- B$Mg,$$S,$$As$
- ✓$Cl$, $Br,I$
- D$P,$$S,$, $As$
✓
Answer
Correct option: C.
$Cl$, $Br,I$
c
(c) According to Dobernier law of triads the atomic mass of the central element was nearly the arithmetic mean of atomic masses of other two elements.
(c) According to Dobernier law of triads the atomic mass of the central element was nearly the arithmetic mean of atomic masses of other two elements.
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 oxidation number of phosphorus in $Ba{({H_2}P{O_2})_2}$ is
→Which of the following properties are similar for isotopes?
The solubility of $S{b_2}{S_3}$ in water is $1.0 \times {10^{ - 5}}$ $mol / litre$ at $298 \,K$. What will be its solubility product
→The element with atomic number $36$ belongs to …… block in the periodic table
→Knocking sound occurs in engine when fuel
Major product of the given reaction is
→$H_2C = CH - CH_2 - I \xrightarrow[CC{{l}_{4}}]{HI(excess)}$
Maximum bond angle is present in
The first, second and third Ionisation energies $(E_1 , E_2$ and $E_3)$ for an element are $7\, eV, 12.5\,eV$ nnd $42.5\, eV$ respectively. The most stable oxidation state of the element will be
→Equilibrium constants ${K_1}$ and ${K_2}$ for the following equilibriam
→$NO_{(g)} + \frac{1}{2}{O_2} \rightleftharpoons N{O_2}_{(g)}$
$2N{O_2}_{(g)} \rightleftharpoons 2NO_{(g)} + {O_2}_{(g)}$
The concentration of hydrogen ion in a sample of soft drink is $3.8 \times 10^{-3}M$. What is its $\ce{pH}\ ?$
→