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Unit - 4.2 Geometric Representation of Atomic Structure CHEMISTRY - Unit - 4.2 Geometric Representation of Atomic Structure

ICSE - STD 8 - CHEMISTRY (ICSE - English Medium). 37 questions in this chapter.

Question types

Unit - 4.2 Geometric Representation of Atomic Structure question types

37 questions across 7 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

37
Questions
7
Question groups
5
Question types
Sample Questions

Unit - 4.2 Geometric Representation of Atomic Structure questions

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

Q 7[2 Mark Question Answer]2 Marks
Draw geometric representation of following atoms, showing clearly, the number of protons, number of neutrons and number of electrons in various shells.
(c) Chlorine ${ }_{17} Cl ^{35}$
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Q 8[2 Mark Question Answer]2 Marks
Draw geometric representation of following atoms, showing clearly, the number of protons, number of neutrons and number of electrons in various shells.
(b) Argon ${ }_{18} Ar ^{40}$
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Q 9[2 Mark Question Answer]2 Marks
Draw geometric representation of following atoms, showing clearly, the number of protons, number of neutrons and number of electrons in various shells.
(a) Calcium ${ }_{20} Ca ^{40}$
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Q 21MCQ1 Mark
The atoms of same elements having different physical properties, but same chemical properties are called
  • A
    allotropes
  • B
    isobars
  • ✓
    isotopes
  • D
    both (a) and (c)

Answer: C.

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Q 23MCQ1 Mark
With the exception of helium all noble gases have_______________electrons in their valence shell.
  • ✓
    2
  • B
    18
  • C
    8
  • D
    32

Answer: A.

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Q 24MCQ1 Mark
The electronic configuration of sodium [1123Na] is:
  • A
    2, 8, 8, 6
  • ✓
    2, 8, 1
  • C
    2, 9
  • D
    2, 18, 4

Answer: B.

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Q 25MCQ1 Mark
The isotopes of a same element have:
  • A
    same mass number
  • B
    same atomic number
  • C
    different mass number
  • ✓
    (b) and (c) both

Answer: D.

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Q 31Match The Following.4 Marks
Column AColumn B
1. Atoms of same elements having same atomic number, but different mass numbers.(a) Helium
2. An isotope of hydrogen.(b) Isotopes
3. The maximum number of electrons in the valence shell of an atom.(c) 2, 8, 5
4. The lightest noble gas.(d) Deuterium
 (e) 8
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