In the ground state of atomic Fe(Z=26), the spin-only magnetic moment is ________`xx10^(-1)`BM. (Round off to the Nearest Integer).
[Given : `sqrt(3)=1.73,sqrt(2)=1.41` ]

The spin-only magn etic moment value of B_2^(+) species is __________ xx 10^(-2) BM. (Nearest integer) [Given : sqrt3 = 1.73 ]

The number of orbitals with n=5, m_(1)= +2 is ___ (Round off to the Nearest Integer).

For a certain first order reaction 32% of the reactant is left after 570s. The rate constant of this reaction is "_________" xx 10^(-3) s^(-1) . (Round off to the Nearest Integer ) . [ Given : log_(10) 2 = 0.301, ln 10 = 2.303 ]

The solubility product of PbI_2 is 8.0 xx 10^(-9) . The solubility of lead iodide in 0.1 molar solution of lead nitrate is x xx 10^(-6) mol /L. The value of x is __________. (Rounded off to the nearest integer ). [Given : sqrt(2) = 1.41]

The mole fraction of a solution in a 100 molal aqueous solution is "_____________"xx 10^(-2) ( Round off to the Nearest Integer ). [ Given : Atomic masses : H : 1.0 u, O : 16.0 u]

When light of wavelength 248 nm falls on a metal of threshold energy 3.0 eV, the de-Broglie wavelength of emitted electrons is "_________"Å (Round off to the Nearest Integer). [Use : sqrt3 = 1.73 , h - 6.63 xx 10 ^(-34) Js m _(c ) = 9.1 xx 10 ^(-31) kg , c =3.0 xx 10 ^(8) ms ^(-1) ,1eV = 1. 6 xx 10 ^(-19))]

A ball weighing 10 g is moving with a velocity of 90ms^(-1) . If the uncertainty in its velocity is 5%, then the uncertainty in its position is _______ xx10^(-33)m . Rounded off to the nearest integer) [Given h=6.63xx10^(-34)Js ]

A certain element crystallises in a bcc lattice of unit cell edge length 27Å. If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cell in Å will - (Round off to the Nearest Integer). [Assume each lattice point has a single atom] [Assume sqrt3 =1.73, sqrt2=1.41]

2 molal solution of a weak acid HA has a freezing point of 3.885^@C . The degree of dissociation of this acid is _______ xx10^(-3) .(Round off to the Nearest Integer). [Given : Molal depressing constant of water =1.85 K kg mol^(-1) Freezing point of pure water = 0^@C ]

KBr is doped with 10^(-5) mole percent of SrBr_(2) . The number of cationic vacancies in 1 g of KBr crystal is ________ 10^(14) . (Round off to the Nearest Integer). [Atomic Mass : K : 39.1 u, Br : 79.9 u N_(A)=6.023 xx 10^(23) ]