Carbon possesses only two unpaired electrons in its valence shell. How does it show a covalency equal to four in most of its compounds?

Carbon atom possesses only two unpaired electrons. How is it able to show tetracovalency?

Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain.

Only the unpaired electrons present in the outermost shell of an atom are called valence electrons.

An element A has 2 electrons in its, fourth shell. State its valency

Which element has 3 shells in total with eight electrons in its valence shell

Which element has (a) two shells, both of which are completely filled with electrons? (b) the electronic configuration 2, 8, 2? (c) a total of three shells, with four electrons in its valence shell? (d) a total of two shells, with three electrons in its valence shell? (e) twice as many electrons in its second shell as in its first shell?

The element that has two unpaired electrons in its M2+ ion form is:

Element X has two electrons in its M shell. Identify the element.

Carbon has four electrons in its valence shell. Which type of compounds can be formed by carbon atom and why ? Give any one example of such compounds.

Give reason for the following Carbon has two unpaired electrons in the outermost orbit, but it is tetravalent in organic compound