Structure Of The Atom
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element ?
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Rutherford's alpha-particle scattering experiment was responsible for the discovery of:
Complete the following table.
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes 816X and 818X in the sample?
Compare the properties of protons, electrons and neutrons.
Number of valence electrons in Cl− ion are:
Compare all the proposed models of an atom given in this chapter.
What are the limitations of J.J.Thomson's model of the atom?
Describe Bohr's model of the atom.