Download App

2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
The quantum numbers $+1/2$ and $-1/2$ for the electron spin represent
  • A
    rotation of the electron in clockwise and anticlockwise direction respectively
  • B
    rotation of the electron in anticlockwise and clockwise direction respectively
  • C
    magnetic moment of the electron pointing up and down respectively
  • ✓
    two quantum mechanical spin states which have no classical analogue
✓

Answer

Correct option: D.
two quantum mechanical spin states which have no classical analogue
d
Just like the earth rotates around its axis, the electron spins about its axis either clockwise or anti-clockwise manner. The two types of rotation are $+\frac{1}{2}$ and $-\frac{1}{2}$. These two quantum mechanical spin states which have no classical analogue.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 2. structure of atom→2. structure of atom — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The correct order of increasing energy of atomic orbitals is
→
To obtain maximum mass of $NO_2$ from a given mass of a mixture of $NH_3$ and $O_2$ , the ratio of mass of $NH_3$ to $O_2$ should be $N{H_3} + {O_2} \to N{O_2} + {H_2}O$
→
In which of the following reactions $1,3$ butadiene will be obtained as a major product?
→
Which of the following reaction does not give Alkyne
→
Which of the following is paramagnetic ?
→
Which of the following is optically active :-
→
How many $1^o $ carbon atom will be present in a simplest hydrocarbon having two $3^o $ and one $2^o $ carbon atom ?
→
For the reaction, $C{O_{(g)}} + C{l_{2(g)}}$ $\rightleftharpoons$ $COC{l_{2(g)}}$ the ${K_p}/{K_c}$ is equal to
→
Identify $A$ and $B$ in the following sequence of reaction
→
Aluminium oxide is not reduced by chemical reactions since
→