Explanation

Magnetic susceptibility (χ) is indeed measured:

Explanation

• The mass spectrum of CH3Br (methyl bromide) shows two peaks at m/z values of 94 and 96, corresponding to the molecular ions [CH3Br]+.
• These peaks are due to the natural abundance of bromine isotopes, 79Br and 81Br, which are present in a ratio of approximately 3:1.
• As a result, the peak at m/z 94 ([CH379Br]+) is about 3 times more intense than the peak at m/z 96 ([CH381Br]+).
  

Explanation

• In a process at constant volume, the change in internal energy (ΔE) is equal to the heat added to the system (q).
• Therefore, at constant volume, ΔE = q.

Explanation

In SF6 (sulfur hexafluoride), the central sulfur atom is bonded to six fluorine atoms in an octahedral arrangement. This results in two types of bond angles:

• The F-S-F bond angles in the equatorial plane are 90°
• The F-S-F bond angles between the equatorial and axial fluorine atoms are 180°

Explanation

The metal ions of transition metals are paramagnetic. The magnetic moment towards magnetic field is greatest of Fe^+3.

Explanation

The coordination number and oxidation state of cobalt in the given complex Na4[Co(C2O4)3] are respectively 6 and +3.

Explanation

The molecule that is polar and has a dipole moment of 5.33 x 10^-30 Cm is SO2 (sulfur dioxide).

Explanation

‘He’ gas effuse from a hole of 10 dm^3 vessel in “5” seconds. The time for effusion of O2 from the same hole of 10 dm^3 will be 14.1 seconds.

Explanation

Cholesteryl benzoate is an example of a liquid crystal.

Explanation

• The given reaction (CH4 + Cl2 → CH3Cl + HCL) is an example of a free radical substitution reaction.
• Free radical reactions typically exhibit a constant rate over time, regardless of the concentration of the reactants.
• Therefore, the order of this reaction is Zero order.