In the Lewis structure of There are three bonds shown as the three parallel lines between the N atoms. This is a triple bond, with each bond formed by a pair of electrons, one from each N atom. Thus, this triple bond represents a total of 6 electrons.
Each N atom has two dots representing a lone pair. Making total number of electrons around each N = 8 and thus completing octet for both N.
Question 1: What does the three lines represent in Lewis structure of ?
a) Three lone pairs b) Three electrons
c) Triple bond d) Double bond
Answer: Option c) Triple bond.
Explanation: In the Lewis structure of There are three bonds shown as the three parallel lines between the N atoms. This is a triple bond, with each bond formed by a pair of electrons, one from each N atom.
Question 2: How many of total nonbonding electrons are present in Lewis structure of .
a) 0 b) 1
c) 2 d) 4
Answer: Option d) 4
Explanation: Each nitrogen atom has 5 valence electrons. Out of these 5, each N atom uses three electrons in bonding with each other and two electrons are left on both N atoms. Thus, total of 4 unpaired electrons are there in lewis structure of .
Question 3: What kind of bond is present in molecule?
a) Covalent bond b) Ionic bond
c) Co-ordinate bond d) None of the above
Answer: Option a) Covalent bond
Explanation: N is a non-metal. Bond formed between two nonmetals is covalent and is formed by sharing of electrons. In Both N atoms share 6 electrons by forming a triple bond. Hence, the bond is covalent.
Question 4: What do the two dots on an atomic symbol represent in a lewis structure?
a) Single bond b) Lone pair
c) Double bond d) An unpaired electron
Answer: Option b) Lone pair
Explanation: The lone pair of an atom is represented by two solid dots on the atomic symbol, in a lewis structure.
Question 5: How many triple bonds are there in lewis structure of
a) 0 b) 1
c) 2 d) 3
Answer: Option b) 1
Explanation: In a molecule two N atoms share 6 electrons with each other forming a triple covalent bond between them. Each bond is formed by a pair of electrons and thus 6 electrons give rise to a triple bond. In lewis structure the triple bond is represented by three solid parallel lines between two N atoms.
Question 6: How many bonding electrons are there in
a) 2 b) 3
c) 4 d) 6
Answer: Option d) 6
Explanation: A nitrogen atom has a total of 7 electrons, out of which there are 5 valence electrons. In a Molecule total electrons are 14 and valence electrons are 10. The three electrons from each nitrogen atom are shared with each other forming a triple bond between two N atoms, thus total bonding electrons in lewis structure of
is 6.
Question 7: What are valence electrons-
a) Total electrons in an atom b) Electrons in outermost shell
c) Noble gases d) Electrons in outermost subshell
Answer: Option b) Electrons in outermost shell
Explanation: Valence electrons are electrons present in the outermost shell of an atom, and can participate in the formation of a chemical bond with other atoms.
Question 8: Which of the following statements about lewis structure of is true?
a) There are 6 nonbonding electrons. b) There are 4 bonding electrons.
c) There are two lone pairs. d) There are three triple bonds.
Answer: Option c) There are two lone pairs.
Explanation: Each nitrogen atom has 5 valence electrons. Out of these 5, each N atom uses three electrons in bonding with each other and two electrons are left on both N atoms. Thus, total of 4 unpaired electrons (two lone pairs) are there in lewis structure of .
Question 9: How many total valence electrons are present in ?
a) 3 b) 5
c) 10 d) 10
Answer: Option c) 10
Explanation: Each nitrogen atom has 7 electrons, 5 of which are valence electrons. There are two N atoms in , and therefore 10 valence electrons.
Question 10: follows the octet rule?
a) True b) False
Answer: Option a) True
Explanation: Each N atom is surrounded by two dots and three solid lines, representing another 6 electrons in the triple bond. So each N is surrounded by 8 total valence electrons, completing the octet and making it stable.
A nitrogen atom has a total of 7 electrons, out of which there are 5 valence electrons. In a N2 Molecule total electrons are 14 and valence electrons are 10. The three electrons from each nitrogen atom are shared with each other forming a triple bond between two N atoms, thus total bonding electrons in lewis structure of is N2 6.
In the Lewis structure of N2. There are three bonds shown as the three parallel lines between the N atoms. This is a triple bond, with each bond formed by a pair of electrons, one from each N atom. Thus, this triple bond represents a total of 6 electrons.
Each N atom has two dots representing a lone pair. Making total number of electrons around each N = 6 and thus completing octet for both N.
In a N2 molecule two N atoms share 6 electrons with each other forming a triple covalent bond between them. Each bond is formed by a pair of electrons and thus 6 electrons give rise to a triple bond. In lewis structure the triple bond is represented by three solid parallel lines between two N atoms.