Question
  1. CO is isoelectronic with which of the following compounds:
$\text{NO}^+,\text{N}_2,\text{SnCl}_2,\text{NO}^-_2$
  1. Which of the following species have the same shape?
$\text{CO}_2\text{CCl}_4,\text{O}_3,\text{NO}^-_2$

Answer

i. CO is isoelectronic with (i) $\mathrm{NO}^{+}$and (ii) $\mathrm{N}_2$.
ii. $\mathrm{O}_3$ and $\mathrm{NO}_2^{-}$, have same shape, i.e. bent molecule or angular molecule.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Why is the ionization enthalpy of B less than the ionization enthalpy of Be?
Does the oxidation number of an element in any molecule or any polyatomic ion represent the actual charge on it?
Write the product of the following reactions:
  1.  
  1. $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_3\xrightarrow[{\Delta}]{\text{AlCl}_3}$
Calculate the standard free energy change $\Delta \mathrm{G}^{\circ}$ for the reaction: $2 \mathrm{HgO}(\mathrm{s}) \rightarrow 2 \mathrm{Hg}(\mathrm{l})+\mathrm{O}_2(\mathrm{~g}) \Delta \mathrm{H}^{\circ}=91 \mathrm{~kJ} \mathrm{~mol}^{-1}$ at $298 \mathrm{~K}^2 \mathrm{~S}^{\circ}(\mathrm{HgO})=72.0 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}, \mathrm{~S}_{(\mathrm{Hg})}^{\circ}=77.4 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ and $\mathrm{S}_{\left(\mathrm{O}_2\right)}^{\circ}=205 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ at 298 K .
An alkene (molecular weight $=56$ ) on reaction with trioxygen followed by zinc/ $CH _3 COOH$ gave only ethanal. Identify the Structure of the alkene.
What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of $10 \mathrm{~ms}^{-1}$ ?
Calculate the total entropy change, $\Delta \mathrm{S}_{\text {total }}$ and state if the process is spontaneous, when one mole of liquid mercury $\mathrm{Hg}(\mathrm{l})$ changes to mercury vapour, $\mathrm{Hg}(\mathrm{g})$ at 298 K . The molar entropy of vapourisation of Hg is $99 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$ and molar enthalpy of vapourisation is $59.1 \mathrm{k} \mathrm{J} \mathrm{mol}^{-1}$.
Define the following and also tell their units.
(i) Frequency
(ii) Wavelength
(iii) Wavenumber.
What is photoelectric effect and also tell the results of its experiment?
$\text{N}_2(\text{g})+3\text{H}_2(\text{g})\rightleftharpoons2\text{NH}_3(\text{g});$
$\text{K}=0.50\text{ at }673\text{K.}$
Write the equilibrium expression and equilibrium constant for reverse reaction.