Ch – 4 Structure Of The Atom ( Part 3 )

Q.1: ____________ are defined as the atoms of the same element, having the same atomic number, but different mass numbers. a) Isobars b) Isotopes c) Both Q.2: Each ___________ of an element is a pure substance. a) Isobar b) Isotope c) Both Q.3: An isotope of _____________ is used in the treatment of cancer. a)Continue reading “Ch – 4 Structure Of The Atom ( Part 3 )”

Ch – 4 Structure Of The Atom ( Part 2 )

Q.1: The distribution of electrons into different orbits of an atom was suggested by __________ and __________. a) Bohr, Bury b) Bohr, Rutherford c) Bohr, Thomson Q.2: The maximum number of electrons that can be accommodated in the outermost orbit is ________. a) 4 b) 6 c) 8 Q.3: The electrons present in the outermostContinue reading “Ch – 4 Structure Of The Atom ( Part 2 )”

Structure Of The Atom ( Part 1 )

Q.1: In 1886, E. Goldstein discovered the presence of new radiations in a gas discharge and called them ___________. a) canal rays b) electrons c) atoms Q.2: J. J. Thomson was awarded the Nobel Prize in Physics in 1906 for his discovery of ____________. a) protons b) electrons c) neutrons Q.3: ________’s atomic theory suggestedContinue reading “Structure Of The Atom ( Part 1 )”