WorksheetsElectronic Structure of Matter
Total questions: 10
Worksheet time: 5mins
How many orbitals are on the third principal energy level?
2
9
3
10
Which of the following postulates explain that no two electrons can have the same set of four quantum numbers?
Hund’s Rule
Aufbau principle
Dalton’s Atomic Theory
Pauli’s Exclusion Principle
Based on Rutherford’s atomic model, which sub-atomic particle is present in the nucleus of an atom?
Proton only
Proton and Neutron
Neutron and Electron
Proton and Electron
Who proposed the probability that electrons can be found in certain locations around the nucleus of an atom?
Niel’s Bohr
Ernest Rutherford
Erwin Schrodinger
Joseph John Thomson
Which among the following shows that an atom is stable?
With 6 valence electrons
With 8 valence electrons
With 10 valence electrons
With 12 valence electrons
Which explains the filling up of the orbital in the order of increasing energy?
Pauli’s Exclusion
Aufbau Principle
Octet Rule
Hund’s Rule
An element will always have the same number of ________.
electrons
neutrons
protons
orbitals
Which orbital designation has the highest energy?
2s
3d
2p
4s
Which atomic model is proposed by Schrodinger?
nuclear model
raisin bread model
planetary model
quantum mechanical model
The symbol "n" in the Bohr theory of atomic structure refers to
the energy of electron
the number of electron in an energy level
the orbit in which an electron is found
the total energy of the atom
