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Atomic Structure

Covers the structure of the atom, Rutherford's model, Bohr's model, distribution of electrons in orbits, and fundamental atomic particles (protons, neutrons, electrons).

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following best describes a proton?

  1. A positive particle
  2. Alpha particle
  3. Particles present in the aqueous solution of an acid
  4. Nucleus of a hydrogen atom
  5. -
Question 2 Multiple Choice (Single Answer)

The introduction of a neutron into the nuclear composition of an atom would lead to a change in the

  1. number of electrons
  2. chemical nature of the atom
  3. atomic number
  4. atomic weight
  5. -
Question 3 Multiple Choice (Single Answer)

Which one of the following is an element?

  1. Electron
  2. Proton
  3. Neutron
  4. None of these
  5. -
Question 4 Multiple Choice (Single Answer)

The element of atomic number 22 belongs to which of the following periods of the periodic table?

  1. Period 2
  2. Period 4
  3. Period 6
  4. Period 8
  5. -
Question 5 Multiple Choice (Single Answer)

Which of the following is not suggested by Rutherford's alpha ray scattering experiment?

  1. Mass and energy are related.
  2. Nucleus of an atom is positively charged.
  3. Nucleus of an atom is very dense and hard.
  4. Nucleus of an atom is very small as compared to the size of the atom as a whole.
  5. -
Question 6 Multiple Choice (Single Answer)

An element belongs to group 4 and period 2. The atomic number of the element is

  1. 6
  2. 5
  3. 8
  4. 7
  5. -
Question 7 Multiple Choice (Single Answer)

The element of atomic number 12 belongs to which of the following groups of the periodic table?

  1. 2nd group
  2. 3rd group
  3. 5th group
  4. 7th group
  5. -
Question 8 Multiple Choice (Single Answer)

Which of the following is highly energetic electromagnetic radiation?

  1. Ultraviolet rays
  2. Visible radiations
  3. Infrared
  4. Microwaves
  5. -
Question 9 Multiple Choice (Single Answer)

Bohr's model can explain the

  1. spectrum of hydrogen only
  2. spectrum of an atom or ion containing one electron only
  3. spectrum of hydrogen molecule
  4. solar spectrum
  5. -
Question 10 Multiple Choice (Single Answer)

Who discovered proton?

  1. Rutherford
  2. Goldstein
  3. Thomson
  4. Chadwick
  5. -
Question 11 Multiple Choice (Single Answer)

In the conversion of chlorine atom to chloride ion, there is a decrease in the

  1. atomic weight
  2. atomic number
  3. number of valence electrons
  4. All of the above
  5. -
Question 12 Multiple Choice (Single Answer)

Where are the protons in an atom present?

  1. Outside the nucleus
  2. Inside the nucleus
  3. Both inside and outside the nucleus
  4. None of these
  5. -
Question 13 Multiple Choice (Single Answer)

Which of the following radiations is an electromagnetic radiation with maximum wavelength?

  1. Ultraviolet rays
  2. X rays
  3. Radiowaves
  4. Infrared rays
  5. -
Question 14 Multiple Choice (Single Answer)

Rutherford's alpha ray scattering experiment is related to the size of the

  1. atom
  2. atomic nucleus
  3. electron
  4. neutron
  5. -
Question 15 Multiple Choice (Single Answer)

The stationary orbits are those orbits in which

  1. electrons do not move
  2. electron energy remains constant
  3. angular momentum of electron is equal to h/2pi
  4. electrons move by emitting radiations
  5. -
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