Question

Which element is most likely to be shiny? sulfur (S) boron (B) calcium (Ca) carbon (C

Answer 1

Answer:

The ability to "shine" is known as lustre. Metals display lustrous properties than non metals.

• Sulphur is a non metal.
• Boron is also a non metal.
• Calcium is a metal
• Carbon is a non metal.

Hence Calcium will exhibit lustrous properties than other elements. That is, calcium is likely to be shiny.

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Answer 2

The Correct Solution is Calcium.

• Calcium is metal whereas Sulfur, Boron and Carbon are non-metals.
• Metallic lustre is a pretty common feature of metals. The manner light interacts with the surface of a crystal or mineral is called lustre.
• The free electrons in metals are responsible for their shiny appearance. 
• Metals have low ionisation energies, and when they undergo chemical reactions, they often lose electrons (i.e. get oxidised).
• Normally, they don't receive electrons.
• Shiny metals are excellent conductors of electricity. 
• A good example of an intensive property is lustre.
• The term "lustre" refers to a categorization of optical attributes.
• Metals are solids at room temperature. Exception: Mercury which is liquid at room temperature.
• Metals are malleable and ductile.
• The melting and boiling points of metals are extremely high.
• With the exception of sodium and potassium, which are soft and can be cut with a knife, all metals are hard.