Rutherford’s experiment on scattering of particles showed for the first that atom has
  • Proton
  • electron
  • Nucleus
  • Neutron
what is the relation for Uncertainty principle
  • $\Delta x \times \Delta p = \frac {h}{8 \pi}$
  • $\Delta x \times \Delta p = \frac {h}{2 \pi}$
  • $E=mc^2$
  • $\lambda = \frac {h}{p}$
Two atoms are said to be isobars if.
  • they have same number of electrons but different number of neutrons.
  • they have same number of neutrons but different number of electrons.
  • they have same atomic number but different mass number.
  • sum of the number of protons and neutrons is same but the number of protons is different.
Which property is different for neutral atoms of the two isotopes of the same element
  • Number of neutrons
  • Atomic number
  • None of these
  • Number of protons
0 h : 0 m : 1 s

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