Vanderwaal Radius
Trending Questions
Q. an atomic solid has hexagonal arrangement of unit cell with height of hexagon as x. the radius of atom in terms of x is .
Q. The approximate radius of a H-atom is 0.05 nm, and that of proton is 1.5 x 10-15 m. Assuming both thehydrogen atom and the proton to be spherical, calculate fraction of the space in an atom of hydrogen thatis occupied by the nucleus.
Q. The radius of H-atom is supposed to be 0.53 Angstrom. Assuming that atom is spherical, the weight of hydrogen atom is (density of hydrogen atom = 2.675 g/cm^3)
Q. 20. Sodium forms body centred cubic crystals. What is the atomic radius of sodium if the length of the side of unit cell of sodium is 429.56 pm? 1) 170 pm 2) 186 pm 3) 220 pm 4) 160 pm
Q. What is the ratio of octahedral holes to the number of anions in hexagonal closed packed structure ?
Q. 23. If radius of octahedral voids is "r" &atomic radius of atoms asssuming cubical close packing is "R" then relation between "r" &"R" is ?
Q. 50.If radius of an octahedral void is r and atomic radius of atoms assuming cubical close packing is R. Then the relation between r and R is
Q. 21 Radius of Ar atom is 145pm. The percentage volume occupied by an Ar atom at STP is
Q.
Atomic radic of fluorine and neon in ˚A units are respectively given by
0.72, 160
1.60 , 1.60
0.72, 07.72
None of these
Q. 49 If the radius of 2nd orbit of hydrogen is 2*22/7 then what will be the radius of the 3rd orbit of He+
Q. Correct order of atomic radius is
- Ga>Al>B
- B>Al>Ga
- Al>Ga>B
- B>Ga>Al
