Question
Write the complete symbols for the nuclei having:
(i) atomic number 26 and mass number 55,
(ii) atomic number 4 and mass number 9
Solution
Write the complete symbols for the nuclei having:
(i) atomic number 26 and mass number 55,
(ii) atomic number 4 and mass number 9
Name the particles which determine the mass of an element.
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?
Mock Test Series
