Question

what are covalent bonds? what type of bond is present in n2 and ch4 molecules​

Answer 1

Answer:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Triple covalent bond  is present in nitrogen.Nitrogen is a non metal. A nitrogen atom has 5 electrons in its outer shell. Two nitrogen atoms will each share three electrons to form three covalent bonds and make a nitrogen molecule (N2).

By sharing the six electrons where the shells touch each nitrogen atom can count 8 electrons in its outer shell. These full outer shells with their shared electrons are now stable. The N2 molecule will not react further with other nitrogen atoms.Note the 3 pairs (6 electrons) shared between the atoms.Each electron pair is one bond.Nitrogen has three bonds between its atoms. This is called a triple bond. The triple bond is very strong and this is what makes nitrogen so unreactive (stable).

There are no ions present (no + or - charges) in nitrogen gas because the electrons are shared, not transferred from one atom to another.

Answer 2

Answer:

Bonding in N2: In this non-polar covalent bond is present. Bonding in CH4 molecule: In this polar covalent bond is present.

Explanation:

. A nitrogen atom has 5 electrons in its outer shell.

Two nitrogen atoms will each share three electrons to form three covalent bonds and make a nitrogen molecule (N2).

By sharing the six electrons where the shells touch each nitrogen atom can count 8 electrons in its outer shell. These full outer shells with their shared electrons are now stable. The N2 molecule will not react further with other nitrogen atoms.Note the 3 pairs (6 electrons) shared between the atoms.Each electron pair is one bond.Nitrogen has three bonds between its atoms. This is called a triple bond. The triple bond is very strong and this is what makes nitrogen so unreactive (stable).

There are no ions present (no + or - charges) in nitrogen gas because the electrons are shared, not transferred from one atom to another.