Why do elements in the same group on the periodic table have similar properties?
A. They have similar numbers of neutrons.
B. They have similar atomic masses.
C. They have similar numbers of protons.
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D. They have similar numbers of valence electrons.
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An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost