Quiz  /  Valence electrons Class 10 MCQ Questions With Answers

  • 1. 
    Select the elements that has 8 valence electrons.

  • Ne
  • Kr
  • Xe
  • All Of above

  • 2. 
    Valence electrons plays a key role in chemical reactions and it increases from left to right of the periodic table.

  • TRUE
  • FALSE

  • 3. 
    The period that an element is in, tells you what?

  • Number of protons
  • Number of electrons
  • Number of valence electrons
  • Number of shells

  • 4. 
    Ga has _______ valence electrons.

  • 1
  • 2
  • 3
  • 4

  • 5. 
    How many valence electrons does Na have?

  • 1
  • 5
  • 6
  • 11

  • 6. 
    TRUE OR FALSE Lithium and Beryllium have the same number of valence electron.

  • TRUE
  • FALSE

  • 7. 
    Chlorine ( Cl) has _________ valence electrons.

  • 3
  • 5
  • 7
  • 8

  • 8. 
    The atomic mass of Titanium is 48 and its proton is 22, therefore its number of neutron is ________

  • 22
  • 24
  • 26
  • 70

  • 9. 
    What is the goal of the Lewis Dot Structure?

  • To determine the electron position.
  • To show the element's valence electrons & bonding capabilities.
  • To find the atomic mass of an element.
  • To search for the number of electrons in an individual atom.

  • 10. 
    What is the chemical symbol for Potassium?

  • Po
  • P
  • K
  • Pm

  • 11. 
    All of the elements has 4 valence electrons EXCEPT______

  • Carbon
  • Silicon
  • Germanium
  • Selenium

  • 12. 
    This could be the dot diagram of

  • Mg
  • Cl
  • C
  • O
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