Structure Of The Atom
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
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Explain Na+ has completely filled K and L shells.
Composition of the nuclei of two atomic species X and Y are given as under X YProtons = 6 6Neutrons= 6 8
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?
Complete the following table.
If Z=3, what would be the valency of the element? Also, name the element.
Rutherford's alpha-particle scattering experiment was responsible for the discovery of:
Explain with examples (i) Atomic number, (ii) Mass number, (iii) Isotopes and (iv) Isobars. Give any two uses of isotopes.
What are the limitations of Rutherford's model of the atom?