Chemistry-
General
Easy
Question
The number of unpaired electrons in a chromic ion, (atomic number 24) is
- 6
- 4
- 3
- 1
The correct answer is: 3
Related Questions to study
chemistry-
Rutherford’s alpha particle scattering experiment eventually led to the conclusion that
Rutherford’s alpha particle scattering experiment eventually led to the conclusion that
chemistry-General
chemistry-
Which is correct statement about proton?
Which is correct statement about proton?
chemistry-General
chemistry-
Electromagnetic radiation with maximum wave length is
Electromagnetic radiation with maximum wave length is
chemistry-General
chemistry-
Bohr’s model can explain
Bohr’s model can explain
chemistry-General
chemistry-
Maximum number of electrons present in ‘N’ shell is
Maximum number of electrons present in ‘N’ shell is
chemistry-General
chemistry-
The increasing order for the values of e/m (charge/mass) is
The increasing order for the values of e/m (charge/mass) is
chemistry-General
chemistry-
The electron level which allows the hydrogen to absorb photons but not to emit is
The electron level which allows the hydrogen to absorb photons but not to emit is
chemistry-General
chemistry-
When alpha particles are sent through a thin metal foil, most of them go straight through the foil because
When alpha particles are sent through a thin metal foil, most of them go straight through the foil because
chemistry-General
chemistry-
The symbol of the element whose atoms have the outer most electronic configuration 2s2, 2p3 is
The symbol of the element whose atoms have the outer most electronic configuration 2s2, 2p3 is
chemistry-General
chemistry-
A binary solid (A+B-) has a rock salt structure. If the edge length is 400 pm and radius of cation is 75 pm, the radius of anion is
A binary solid (A+B-) has a rock salt structure. If the edge length is 400 pm and radius of cation is 75 pm, the radius of anion is
chemistry-General
chemistry-
If NaCl is doped with 10-3mol % SrCl2 then the concentration of cation vacancies will be :
If NaCl is doped with 10-3mol % SrCl2 then the concentration of cation vacancies will be :
chemistry-General
chemistry-
X- rays of wavelength equal to 0.134 nm give a first order diffraction from the surface of a crystal when the value of is 10.5° The distance between the planes in the crystal parallel to the surface is (sin 10.5° = 0.1822)
X- rays of wavelength equal to 0.134 nm give a first order diffraction from the surface of a crystal when the value of is 10.5° The distance between the planes in the crystal parallel to the surface is (sin 10.5° = 0.1822)
chemistry-General
chemistry-
The wavelength of X-rays which gives a diffraction angle, , equal to 16.80° for a first order diffraction for a crystal with interplanar distance 0.200 nm, is ( given sin 8.4° = 0.146)
The wavelength of X-rays which gives a diffraction angle, , equal to 16.80° for a first order diffraction for a crystal with interplanar distance 0.200 nm, is ( given sin 8.4° = 0.146)
chemistry-General
chemistry-
The second order Bragg diffraction of X- rays with 
from a set of parallel planes in a metal occurs at an angle of 60°. The distance between the scattering planes in the crystal is
The second order Bragg diffraction of X- rays with from a set of parallel planes in a metal occurs at an angle of 60°. The distance between the scattering planes in the crystal is
chemistry-General
chemistry-
The ionic radii of Rb+ and I- are 1.46 and 
respectively. The most probable type of structure exhibited by it is
The ionic radii of Rb+ and I- are 1.46 and respectively. The most probable type of structure exhibited by it is
chemistry-General
