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Worksheets4.5 Metallic Bonding
Total questions: 8
Worksheet time: 8mins
Why does the melting point of metals increase across period 3, from Sodium (Na) to Aluminium (AI)?
Size of atoms gets smaller
Attraction force between nuclei and free electron increases
Increased space between the valence electrons in the "sea"
Increased number of valence electrons contributed to the "sea"
The diagram shows metallic bonding.
Which labels are correct?
X: atomic nucleus
Y: outer electron
X: metal atom
Y: mobile electron
X: metal cation
Y: mobile electron
X: positive ion
Y: negative ion
Why do metallic compounds conduct electricity as solids?
core electrons are mobile, allowing electricity to flow through the metal
valence electrons are mobile, allowing electricity to flow through the metal
protons are mobile, allowing electricity to flow through the metal
the metal cations are mobile, allowing electricity to flow through the metal
The diagram represents the general structure of a solid Z.
What is Z?
aluminium
iodine
silicon dioxide
sulfur
