1 Who proposed the quantum mechanical model of the atom a) Niels Bohr b) John Dalton c) Erwin Schrödinger d) JJ Thomson
c) Erwin Schrödinger
2 In the Bohr model electrons move in fixed paths called a) Orbitals b) Orbits c) Clouds d) Fields
b) Orbits
3 The quantum mechanical model describes electrons as a) Particles in circular paths b) Clouds of probability c) Stationary around the nucleus d) Moving randomly
b) Clouds of probability
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