An element 'Y' emits one -and two - particles to give 'X'. X and Y are
isotones
isobars
isotopes
isoelectronics
For the reaction, 2NO2 2NO + O2, the value of Kp is equal to K. What will the value of Kp for reaction,
NO + O2 NO2
Which one of the following elements, is a component of a compound essential for photosynthesis ?
Iron
Calcium
Barium
Magnesium
The correct order of stability of carbocations, is :
1 < 2 < 3 < CH3
H3 < 1 < 2 < 3
3 < 2 < 1 < H3
2 < 3 < 1 < H3
B.
H3 < 1 < 2 < 3
More the +I alkyl groups on electron deficient carbon, more stable will be the cabocation. Hence, 3° carbocations are more stable. The correct order is 3° > 2° > 1° > H3
The IUPAC name of the following compound is
bicyclo [2, 2, 0] octane
bicyclo [0, 2, 2] hexane
bicyclo [2, 1, 1] hexane
bicyclo [2, 2, 0] hexane
The following compound can not exhibit
CH3CH = CH - CH(OH).COOH
geometrical isomerism
optical isomerism
metamerism
position isomerism