MCQ
In the modern periodic table, the period indicates the value of :
- Aatomic number
- Batomic mass
- ✓principal quantum number
- Dazimuthal quantum number
✓
Answer
Correct option: C.
principal quantum number
(c) principal quantum number
The number of period is equal to value of principal quantum number
The number of period is equal to value of principal quantum number
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
More "M.C.Q (1 Marks)" from PART - 1 CH - 3 Classification of Elements and Periodicity in Properties→PART - 1 CH - 3 Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→
Similar questions
Consider following compounds :
$(I)\, H_3X - NCS$ $(II)\,H_3Y - NCS$ $(III)\, (H_3X)_2O$ $(IV)\, (H_3Y)_2O$
The incorrect statement regarding given compound is
→$(I)\, H_3X - NCS$ $(II)\,H_3Y - NCS$ $(III)\, (H_3X)_2O$ $(IV)\, (H_3Y)_2O$
The incorrect statement regarding given compound is
A electrovalent compound is made up of
Match List-$I$ with List-$II$.
→|
List-$I$ (Molecule) |
List-$II$. (Number and types of bond/s between two carbon atoms) |
| $A$. ethane | $I$. one $\sigma$-bond and two $\pi$-bonds |
| $B$. ethene | $II$. two $\pi$-bonds |
| $C$. carbon molecule, $\mathrm{C}_2$ | $III$. one $\sigma$-bond |
| $D$. ethyne | $IV$. one $\sigma$-bond and one $\pi$-bond |
Choose the correct answer from the options given below:
In which of the following, the highest oxidation state is not possible?
$2, 4$ -hexadiyne $(C_6H_6)$ is allowed to react with $Li $ in $NH_3 (liq)$. The product obtained is treated with $1$ equivalent of $Cl_2$ in $CCl_4$. Which of the following constitutional isomers are possible products ?
→Consider the following data for series of hydrogen halide Bronsted acids :-
→| Acid | $HF$ | $HCL$ | $HBr$ | $HI$ |
| $K_a$ | $7.2 \times 10^{-4}$ | $1 \times 10^6$ | $1 \times 10^9$ | $3 \times 10^{11}$ |
Which of these Bronsted acids would have the weakest conjugate base ?
Consider the following reaction for which the change in enthalpy is positive
→$2 A ( g ) + B ( g ) \rightleftharpoons C ( g )+ D ( g )$
Which of the following will not affect the equilibrium?
The correct statement about the compounds $A$ and $B$ is
→Which of the following is paramagnetic
While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.25\,g$ of the compound neutralized $2.5\,mL$ of $2\,M\,H _{2} SO _{4}$. The percentage of nitrogen present in organic compound is $......$
→