The elements in the middle of the periodic table are known as:
a. noble elements
c. transition elements
b. heavy metals
d. covalent elements

The correct answer is c. Transition elements

Explanation:

Transition elements are often called transition metals and are located in the middle of the Periodic Table, in the d-block (because they have an incomplete d-orbital). They are all metals, for example: iron (Fe), copper (Cu), titanium (Ti), etc, and they have high melting and boiling points.

explanation:

i think option no d is the correct answer

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.