Find the number of electrons in K+ ion and Cl- ion (Z for K = 19, CI = 17).
Number of electrons in K+ = 19 - 1 = 18
Number of electrons in Cl- =17+1 = 18
What are α-particles?
What are the fundamental particles present in a neutral atom having atomic number greater than 1?
Do protons and neutrons have identical mass?
When α-particles are sent through a thin metal foil, most of them go straight through the foil. What inference do you draw from it?
What did Rutherford's experiment on scattering of particles show for the first time?
What is Plum-Pudding model of the atom?
Are neutrons present in all atoms?
Why are electrons called planetary electrons?
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