A.  Wave nature

        B.  Positive nature

        C.  Particle nature

        D.  Negative nature

        A.  Atomic orbital

        B.  Orbit

        C.  Delocalised orbit

        D.  Localised orbital

        A.  Energy equal to the speed of light

        B.  Energy equals to the energy difference between the two orbits

        C.  None of the above

        D.  All of the above

        A.  Absorbing or emitting greater than the energy difference between the orbits

        B.  Absorbing or emitting less than the energy difference between the orbits

        C.  Absorbing or emitting exactly the energy difference between the orbits

        D.  Absorbing or emitting inversely proportional the energy difference between the orbits

        A.  Greater than the number of protons

        B.  Equals the number of protons

        C.  Less than the number of protons

        D.  Inversely proportional to the number of protons

        A.  F sublevels

        B.  D sublevels

        C.  S-sublevels

        D.  P sublevels

        A.  The core electrons

        B.  The electrons in the inner shell next to the outermost shell

        C.  The electrons in the shell closest to the nucleus

        D.  The electrons in the outer most shell

        A.  Bohr model of the atom

        B.  Edwin schroedinger atomic model

        C.  Heisenberg's atomic model

        D.  Balmer model of the atom

        A.  Planetary-model atom

        B.  Quantum model atom

        C.  Atomic orbitals model atom

        D.  Classical mechanics model atoms

        A.  That atoms consist of a diffuse cloud of positively charged particles surrounding a small dense, negatively charged nucleus

        B.  That atoms consist of a diffuse cloud of negatively charged particles surrounding a small dense, positively charged nucleus

        C.  That atoms consist of a diffuse cloud of neutral particles surrounding a small dense, negatively charged nucleus

        D.  That atoms consist of a diffuse cloud of neutral particles surrounding a small dense, positively charged nucleus

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