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WorksheetsENG1001 Tutorial 4
Total questions: 10
Worksheet time: 7mins
The nucleus of an atom contains... (choose all that apply)
neutrons
photons
protons
electrons
The atomic mass of an atom may be expressed as the sum of the masses of... (choose all that apply)
electrons
neutrons
protons
The atomic number of an electrically neutral atom is equal to the number of...
electrons
protons
neutrons
An element that has the electron configuration 1s22s22p3 has (a) electrons.
The electrons that occupy the outermost filled shell are called (a) electrons.
When all the electrons in an atom occupy the lowest possible energy states, the atom is said to be in its:
ionized state
ground state
cold state
regular state
Ideally speaking, bonds tend to form between two particles such that they are separated by a distance where _______ net force is exerted on them, and their overall energy is _________.
a zero, maximized
a non-zero, maximized
a zero, minimized
a zero, maximized
_________ bonds are the only primary bonds that are directionally dependent.
ionic
covalent
metallic
Materials whose constituent particles are bound by which type of bond are generally expected to have the lowest melting temperatures?
ionic
covalent
metallic
Why do ionic bonds form?
So that the number of protons equals the number of electrons
So that an atom can become unstable
To fill the outermost energy level
To share valence electrons with a neighbouring atom
