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Q.

Which of the following statements about carbon are true?

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a

It is a non-metal.

b

Its electronic configuration is (2,4).

c

Its valency is six.

d

Both A & C.

answer is D.

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Detailed Solution

  • Six electrons, six protons, and six neutrons make up the atom of carbon, a non-metal.
  • The carbon atom's electronic configuration is (2,4).
  • It has a valency of four because it needs four extra electrons to reach its closest configuration as a noble gas.
  • The entire mass of protons and neutrons in an element's atom, denoted in 'u,' is known as the element's atomic mass. As a result, carbon has an atomic number of 12 U rather than 14 U.
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