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Atomic Structure and Chemical Bonding CHEMISTRY - Atomic Structure and Chemical Bonding

ICSE - STD 9 - CHEMISTRY (ICSE - English Medium). 153 questions in this chapter.

Question types

Atomic Structure and Chemical Bonding question types

153 questions across 5 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

153
Questions
5
Question groups
5
Question types
Sample Questions

Atomic Structure and Chemical Bonding questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
When a metal atom becomes an ion:
  • ✓
    It loses electrons and is oxidised.
  • B
    It gains electrons and is reduced.
  • C
    It gains electrons and is oxidised.
  • D
    It loses electrons and is reduced.

Answer: A.

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Q 2MCQ1 Mark
The characteristic of an electrovalent compound is that:
  • A
    They are formed by the sharing of electrons.
  • ✓
    They are formed between metals and non-metals.
  • C
    They are formed between two non-metals.
  • D
    They often exist as a liquid.

Answer: B.

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Q 3MCQ1 Mark
The mass number of an atom whose unipositive ion has $10$ electrons and $12$ neutrons is :
  • A
    $22$
  • ✓
    $23$
  • C
    $21$
  • D
    $20$

Answer: B.

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Q 4MCQ1 Mark
Which of the following is the correct electronic configuration of potassium?
  • A
    $2,8,9$
  • B
    $8,2,9$
  • ✓
    $2,8,8,1$
  • D
    $1,2,8,8$

Answer: C.

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Q 18[3 Mark Question Answer]3 Marks
Complete the following table relating to the atomic structure of some elements.

Element Symbol

Atomic
Number

Mass
Number

Numbers of neutrons

Number of Electrons

Number of Protons

Li

3

6

Cl

17

20

Na

12

11

Al

27

13

S

32

16

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Q 22[5 Mark Question Answer]5 Marks
In the formation of (i) oxygen molecule (ii) carbon tetrachloride molecule, state the following:
  1. Electronic configuration of nearest inert gas attained.
  2. How many electrons are shared/transferred in bond formation
  3. Which type of bonds these compounds form?
  4. Draw their orbital diagrams.
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Q 23[5 Mark Question Answer]5 Marks
An element $X$ has $2$ electrons in its $M$ shell, it forms a bond with an element $Y$ which has $7$ electrons in its third orbit.
  1. Write the formula of the compound formed.
  2. Which nearest inert gas electronic configuration will element $X$ and $Y$ acquire.
  3. Show by orbital diagram the formation of the compound between $X$ and $Y.$
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