Question
CO2 and SO2 both are triatomic molecules but there is a big difference in their dipole moment, why?
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(i) Bond length, depends on hybridization Explain.
(ii) The bond enthalpy of $F - F$ is less than that of Cl-Cl, why?
→(ii) The bond enthalpy of $F - F$ is less than that of Cl-Cl, why?
In three moles of ethane (C2H6), calculate the following:
Number of moles of carbon atoms.
Number of moles of carbon atoms.
(a) Calculate number of significant figures in following.
(i) mass of proton $=1.672 \times 10^{-24} gm$
(ii) mass of electron $=9.108 \times 10^{-28} gm$
(b) Express the following in scientific notation?
(i) 7067(ii) 738.5
→(i) mass of proton $=1.672 \times 10^{-24} gm$
(ii) mass of electron $=9.108 \times 10^{-28} gm$
(b) Express the following in scientific notation?
(i) 7067(ii) 738.5
Wavelengths of different radiations are given below:
$
\lambda=(A) 300 nm
$
$\lambda(B)=300 \mu m$
$\lambda( C )=3 nm$
$\lambda$ (D) $=30 \stackrel{\circ}{A}$
Arrange these radiations in the increasing order of their energies.
→$
\lambda=(A) 300 nm
$
$\lambda(B)=300 \mu m$
$\lambda( C )=3 nm$
$\lambda$ (D) $=30 \stackrel{\circ}{A}$
Arrange these radiations in the increasing order of their energies.
Give reason of following :
(a) HF is a liquid while HCl is gas.
(b) In $C _2 H _5 OH$ and $CH _3 COOH$ covalent bond is present, still it is soluble in water.
→(a) HF is a liquid while HCl is gas.
(b) In $C _2 H _5 OH$ and $CH _3 COOH$ covalent bond is present, still it is soluble in water.
The enthalpy of vapourisation of CCl4 is 30.5kJ mol–1. Calculate the heat required for the vapourisation of 284g of CCl4 at constant pressure. (Molar mass of CCl4 = 154g mol–1).
The skeletal structure of CH3COOH as shown below is correct, but some of the bonds are shown incorrectly.Write the correct Lewis structure for acetic acid.
Atomic number (Z) of an element is 108. Write its electronic configuration and name the group and block to which it belongs.
Draw the possible resonance structures for 
and predict which of the structures is more stable.Give reason for your answer.
and predict which of the structures is more stable.Give reason for your answer.What is the relationship between direction of current and flow of electrons by convention?