Download App

STD 11 - 3. Classification of elements and periodicity in properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
An ionic bond $P^+ Q^-$ is most likely to be formed when
  • A
    the ionization energy of $P$ is high and the electron affinity of $Q$ is low
  • ✓
    the ionization energy of $P$ is low and the electron affinity of $Q$ is high
  • C
    the ionization energy of $P$ and the electron affinity of $Q$ is high
  • D
    the ionization energy of $P$ and the electron affinity of $Q$ is low
✓

Answer

Correct option: B.
the ionization energy of $P$ is low and the electron affinity of $Q$ is high
b
The ionization energy $(IE)$ is defined as the amount of energy required to remove the most loosely bound electron of an isolated gaseous atom to form a cation. Electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion. When the ionization energy is low and electron affinity is high, more will be the tendency to form an ionic bond.

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

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Two aliphatic aldehydes $\mathrm{P}$ and $\mathrm{Q}$ react in the presence of aqueous $\mathrm{K}_2 \mathrm{CO}_3$ to give compound $\mathrm{R}$, which upon treatment with $\mathrm{HCN}$ provides compound $\mathrm{S}$. On acidification and heating, $\mathrm{S}$ gives the product shown below: $Image$

$1.$ The compounds $\mathrm{P}$ and $\mathrm{Q}$ respectively are

MCQ $Image$

$2.$ The compound $R$ is

MCQ $Image$

$3.$ The compound $\mathrm{S}$ is

MCQ $Image$

Give the answer question $1,2$ and $3.$

→
The atomic orbitals are progressively filled in order of increasing energy. This principle is called as
→
Which of the following sets of quantum numbers is correct for an electron in 4f- orbital:
→
Trisilyamine $(SiH_3)_3N$ is
→
Mercury is transported in metal containers made of
→
Different possible thermal decomposition pathways for peroxyesters are shwon below. Match each pathway from List-$I$ with an appropriate structure from List-$II$ and select the correct answer using the code given below the lists. $Image$

Codes: $ \quad P \quad Q \quad R \quad S $

→
The freezing point of a $0.05\,molal$ solution of a non electrolyte in water is ( $K_f = \,1.86\,K\,molality^{-1}$ )
→
A hydrocarbon contains $10.5 \,gm$ carbon and $ 1\,gm$ hydrogen. Its $2.4 \,gm $ has $1 \,litre$ volume at $1 \,atm$ and ${127\,^o}C$, hydrocarbon is
→
Consider the data given below for hypothetical reaction $A \to X$

$Time  (sec)$                     Rate $(mol\,  L^{-1} sec.^{-1})$

$0$                                      $1.60 \times 10^{-2}$

$10$                                    $1.60 \times 10^{-2}$

$20$                                    $1.60 \times 10^{-2}$

$30$                                    $1.60 \times 10^{-2}$

From the above data, the order of reaction is

→
Which of the following pairs shows highest bond dissociation enthalpy among halogens and lowest bond dissociation enthalpy among] hydrogen halides?
→