Structure of the Atom
Chemistry ⇒ Atomic Structure and the Periodic Table
Structure of the Atom starts at 7 and continues till grade 12.
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Calculate the number of neutrons in an atom of chlorine-37 (atomic number 17).
Calculate the number of protons, neutrons, and electrons in ²⁷Al³⁺ (atomic number 13).
Describe the main postulates of Dalton’s atomic theory.
Explain the difference between atomic number and mass number.
Explain the Pauli Exclusion Principle.
Explain why isotopes of the same element have identical chemical properties.
How many unpaired electrons are present in a nitrogen atom (atomic number 7) in its ground state?
State Hund’s Rule of Maximum Multiplicity.
State the significance of the gold foil experiment in the development of atomic structure.
The atomic number of an element is 15. Write its electronic configuration and state the number of valence electrons.
The first ionization energy of sodium is lower than that of magnesium. Explain why.
The isotope carbon-14 is used in radiocarbon dating. How many neutrons does it have? (Atomic number of carbon = 6)
What is the charge and relative mass of a neutron?
What is the electronic configuration of sodium (atomic number 11)?
What is the maximum number of electrons that can be accommodated in the n=4 shell?
What is the maximum number of electrons that can be accommodated in the third shell (n=3) of an atom?
What is the significance of the Heisenberg Uncertainty Principle in atomic structure?
What is the value of the principal quantum number for the third shell?
Which quantum number indicates the spin of an electron?
Which quantum number specifies the orientation of an orbital in space?
