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Atoms

Test your knowledge about atomic structure including subatomic particles, atomic number, mass number, valency, isobars, chemical symbols, and atomicity.

10 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a neutral (no charge) particle?

  1. Electron
  2. Proton
  3. Neutron
  4. None of these
Question 2 Multiple Choice (Single Answer)

Which among the following is a pair of isobars?

  1. bXa, b + 1Ya
  2. bXa, cYb
  3. bXa, b-1Ya-2
  4. bXa, bYa+1
Question 3 Multiple Choice (Single Answer)

What is the valency of an element having atomic number 10?

  1. 2
  2. 1
  3. 0
  4. 3
Question 4 Multiple Choice (Single Answer)

Which of the following pairs of elements represents isobars?

  1. Ca, Ar
  2. Na, Mg
  3. C, N
  4. O, Ne
Question 5 Multiple Choice (Single Answer)

Silver is denoted by the symbol

  1. Al
  2. Pb
  3. Ar
  4. Ag
Question 6 Multiple Choice (Single Answer)

If an atom has 18 protons and 19 neutrons, what will be the atomic number of this atom?

  1. 19
  2. 37
  3. 38
  4. 18
Question 7 Multiple Choice (Single Answer)

If atomic number and mass number of an element are 12 and 25 respectively, what would be the number of neutrons present in it?

  1. 12.5
  2. 12
  3. 25
  4. 13
Question 8 Multiple Choice (Single Answer)

What is the atomic number of an element that possesses 14 protons?

  1. 28
  2. 6
  3. 14
  4. 22
Question 9 Multiple Choice (Single Answer)

Which of the following statements is INCORRECT about atoms?

  1. Atoms are electrically neutral.
  2. Atoms cannot exist independently.
  3. Atoms can be divided into smaller particles.
  4. Atoms combine to form molecules.
Question 10 Multiple Choice (Single Answer)

Which of the following elements has the maximum atomicity?

  1. Phosphorus
  2. Calcium
  3. Hydrogen
  4. Oxygen
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