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Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - NEET MCQ


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10 Questions MCQ Test NCERTs at Fingertips: Textbooks, Tests & Solutions - Test: Kossel-Lewis Approach to Chemical Bonding (NCERT)

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) for NEET 2024 is part of NCERTs at Fingertips: Textbooks, Tests & Solutions preparation. The Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) below.
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Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 1

The electronic configuration of four atoms are given in brackets:

L(1s22s22p1); 
M(1s22s22p5);
Q(1s22s22p63s1);
R(1s22s22p2);

The element that would most readily form a diatomic molecule is

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 1

By sharing of 1electron each, both the atoms of M will get a completed octet.

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 2

Two elements P and Q combine to form a compound. If P has 2 and Q has 6 electrons in their outermost shell, what will be formula of the compound formed?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 2

Valence electrons in P is 2; Valence electrons in Q is 6.

P - 2e- → P2+

Q + 2e- → Q2- 

Since both show a valency of 2, the formula for the compound will be PQ.

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Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 3

How many number of electrons are involved in the formation of a nitrogen molecule?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 3

Number of electrons involved in bonding is 6.

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 4

In which of the following molecules octet rule is not followed?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 4

For NO, the octet rule is not followed due to the presence of odd electrons on N.

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 5

A pair of electrons present between two identicalnon-metals.

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 5

An electron pair is equally shared between two identical atoms like F — F, H — H.
It is pulled towards a more electronegative atom in case of dissimilar atoms.

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 6

During a coordinate bond formation,

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 6

In a coordinate or dative bond, electrons required for sharing are contributed by one atom. The atom which contributes the electrons for sharing is called donor atom and the atom which shares the electrons is called acceptor atom.

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 7

Which of the following molecules contains covalent and coordinate bonds?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 7

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 8

Which of the following shows the Lewis dot formula for CO2?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 8

Step I: Skeleton OCO

Step II: A = 1 x 4 for C + 2 x 6 for O = 4 + 12 = 16 electrons

Step III : Total no. of electrons needed to achieve noble gas configuration (N)
N= 1 x 8 + 2 x 8 = 24

Step IV : Shared electrons, S = N- A = 24-16 = 8 electrons

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 9

How many and what types of bonds are present in NH4+?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 9

Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 10

What is the formal charge on carbon atom in the following two structures?

Detailed Solution for Test: Kossel-Lewis Approach to Chemical Bonding (NCERT) - Question 10

Formal charge on C atom = Valence electrons
-Lone pair of electrons −1/2× Bonding electrons

formal charge on C atom =0

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