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Shells – Introduction to Chemistry

by Adam Le Gresley, PhD
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    About the Lecture

    The lecture Shells – Introduction to Chemistry by Adam Le Gresley, PhD is from the course Chemistry: Introduction.


    Included Quiz Questions

    1. The value of the principle quantum number varies from -1/2 to +1/2
    2. The principle quantum number (n) is a discrete variable having value n = 1, 2, 3, and so on
    3. The higher the principle quantum number, the further the electron is from the nucleus
    4. Higher the value of principle quantum number, less tightly the electron bound to the nucleus of that atom
    5. An increase in the value of principle number represents an increase in the energies of the related shell
    1. It also increases
    2. It remains unaffected
    3. It decreases
    4. It first decreases then suddenly increases
    5. It does not increase
    1. Shell 3 is comprised of one s-, three p-, and five d-orbitals, each capable of holding two electrons at a time
    2. Shell 3 contains one large orbital capable of holding nine pairs of electons
    3. Shell 3 contains three s- and six p-orbitals each holding one pair of electrons
    4. Shell 3 contains four s- and five d-orbitals each containing one pair of electrons
    5. Shell 3 contains seven d-orbitals each having one pair of electrons in it
    1. Emission energy in the form of light, when an electron jumps from higher energy level to the lower energy level
    2. Emission energy in the form of heat, when an electron jumps from higher energy level to the lower energy level
    3. Emission energy in the form of light, when an electron jumps from lower energy level to the higher energy level
    4. Emission nuclear energy, when electron jumps from lower energy level to the higher energy level
    5. Emission energy in the form of heat, when electron jumps from lower energy level to the higher energy level
    1. The uncertainty is readily apparent on a car moving in a straight line on a plane road
    2. The energy value associated with a photon is given by E = hν
    3. The wave-like character is always very pronounced in a moving electron
    4. The energy is transmitted in the form of discrete packets called quanta, when an electromagnetic wave travels through space
    5. The uncertainty principle states that it is impossible to determine both the position, the direction and the velocity of an electron moving around the nucleus with certainty at the same time

    Author of lecture Shells – Introduction to Chemistry

     Adam Le Gresley, PhD

    Adam Le Gresley, PhD


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