Concept explainers
(a)
Interpretation:
The element potassium is a metal, non-metal or metalloid has to be given.
Concept Introduction:
Metals:
Metals are the elements which are shiny materials and good conductors of heat and electricity. All metals are solids at room temperature except for mercury, which is a liquid.
Non-metals:
Nonmetals are the elements which do not have a shiny appearance and non-metals are generally poor conductors of heat and electricity.
Metalloids:
Metalloids are the elements which have properties intermediate between metals and non-metals. Only seven elements are categorized as metalloids.
(b)
Interpretation:
The element plutonium is a metal, non-metal or metalloid has to be given.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The element Sulfur is a metal, non-metal or metalloid has to be given.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The element antimony is a metal, non-metal or metalloid has to be given.
Concept Introduction:
Refer to part (a).
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