WorksheetsBell Ringer 12-6-23
Total questions: 10
Worksheet time: 49mins
Explain the aufbau principle.
Electrons fill orbitals randomly
Electrons fill orbitals in decreasing energy levels
Electrons fill orbitals based on their mass
Electrons fill orbitals in order of increasing energy levels.
Define quantum number.
A set of four numbers used to describe the unique quantum state of an electron in an atom.
A numerical value used to measure the mass of an electron.
A number that represents the speed of light in a vacuum.
A type of number used to count the quantity of protons in an atom.
Explain the significance of quantum numbers in describing the arrangement of electrons in an atom.
Quantum numbers provide information about the arrangement of electrons in an atom.
Quantum numbers are not based on any scientific principles
Quantum numbers only apply to protons and neutrons
Quantum numbers have no significance in describing the arrangement of electrons
10
2
8
18
14
4
3
28
The elements in this group all have 5 valance electrons.
Group 5
Group 15
Group 3
Group 18
Energy levels are shown by:
letters
numbers
a combination of letters and numbers
subscripts
How many energy levels in this element?
2
5
6
3
Which energy level is the lowest ?
1
2
3
