NHF2 lewis Structure & Characteristics: 15 Complete Facts


NHF2 lewis structure or fluorimide is an inorganic compound with not many applications. Let us illustrate all of these properties in this article.

NHF2 lewis structure is a single covalent bonded molecule with N-F and N-H bondings. Nitrogen is a central molecule and to complete its octet share 3 electrons with 2 fluorine atoms and 1 hydrogen atom. This satisfies everyone’s octet criteria.

According to group theory, the NHF2 lewis structure contains a sigma plane. So, it belongs to the C5 point group. Let us look out for various electronic and bonding properties of NHF2 lewis structure like hybridization, shape, angle, etc.

How to draw the NHF2 lewis structure?

NHF2 lewis structure can be formed by the transference of the electrons which involves certain prerequisites for easy judgment. Let us figure it out in a stepwise manner.

Calculating the total number of valence electrons

Firstly, it is important to find out the number of electrons participating in the structure formation. The aggregate valence electrons in NHF2 lewis structure are 20.  N, H and F comprises 5, 1 and 7 valence electrons. Hence the total will be 5 + 1 + 2(7) = 20 valence electrons.

Identifying the central atom

The next step is to find out the central atom. In the NHF2 lewis structure, the central atom is N because it is the least electronegative. When compared then F and H has the most and least electronegativity respectively. But the anomalous behavior is due to the small atomic size of H.

Octet completion

Octet completion is the basis of bonding and lewis structure formation. NHF2 lewis structure follows the same. Nitrogen needs 3 electrons, and fluorine and hydrogen need 1 electron each to fulfill the stability. So, there will be sharing of electrons which leads to N-F and N-H single covalent bonding.

Stability check through formal charge calculation

The final step which confirms the existence of the NHF2 lewis structure is the formal charge calculation. The less the formal charge, the more stable is the molecule. Here the formal charge on all 3 atoms involved is 0 which confirms NHF2 lewis structure as the final stable molecule.

NHF2 lewis structure
NHF2 lewis structure electron dot symbol

NHF2 lewis structure resonance

Resonance or mesomerism is a phenomenon observed in organic compounds. Let us figure out resonance in NHF2 lewis structure.

NHF2 lewis structure does not exhibit resonance phenomenon and does not have resonating structures because it does not have pi bonds and has only single covalent bonds which do not lead to delocalization of electrons.

Resonance is an average of lewis structures where a single structure cannot explain all the properties. It is observed in covalent compounds and needs to satisfy octet stability criteria.

NHF2 lewis structure shape

The shape of any lewis structure is of great importance as it depicts the actual arrangement of the molecule. Let us look out for the shape of the NHF2 lewis structure.

NHF2 lewis structure has a trigonal pyramidal shape because of the 1 H atom and 2 F atoms of high electronegativity. There is lone pair on the central N atom which further increases repulsion and changes the ultimate shape of the molecule.

The symmetry of the NHF2 lewis structure is also disturbed due to the lone pair which creates demarcation in shape and molecular geometry. Hence it is important to demarcate that it has tetrahedral molecular geometry and trigonal pyramidal shape.

NHF2 lewis structure 3D representative

NHF2 lewis structure formal charge

Formal charge calculation is the ultimate method that confirms the existence of the structure. Let us calculate the same for the NHF2 lewis structure.

The formal charge of all the atoms in NHF2 lewis structure is 0.

The formal charge of an atom = Valence electrons in the atom – Non-Bonding electrons – Bonding electrons/2

Using the above equation let us calculate the formal charge for N, F, and H in the NHF2 lewis structure.

  • Formal charge of N in NHF2 lewis structure = 5 – 2 – 6/2 = 0
  • Formal charge of F in NHF2 lewis structure = 7 – 6 – 2/2 = 0
  • Formal charge of H in NHF2 lewis structure = 1 – 0 – 2/2 = 0
  • So, the formal charge of all 3 atoms in NHF2 lewis structure is 0 which proves its stability.

NHF2 bond angle

The bond angle of the lewis structure depicts the difference between the individual bonds in the molecule. Let us discuss the bond angle in NHF2.

NHF2 bond angle is 104.5 degrees. It has tetrahedral molecular geometry and is expected to have a 109.5-degree angle. But due to the presence of lone pair, there is a distortion which leads to variation in the angle.

Lone pair of electrons and the presence of electronegative 2 F atoms are responsible for the distortion in the angle. Due to the high electronegativity of F the electron density is attracted towards them which is assisted by the lone pair. This leads to the shrinkage of the NHF2.

NHF2 lewis structure octet rule

The octet rule is a stability criterion fulfilled by the main group elements except for some anomalies. Let us find out whether the NHF2 lewis structure stands on this criterion or not.

NHF2 lewis structure completes the octet criteria which is the presence of 8 valence electrons in every atom after bonding. N being a central atom is surrounded by 2 F and 1 H atoms which share 3 electrons for octet completion. F on the similar lines need 1 electron each which it shares with the central N atom.

Hydrogen also shares 1 electron with the central N atom to complete its duplet. Hydrogen follows the duplex criteria unlike other main group elements because it is the first element of the periodic table. It has a small size and can accommodate 2 electrons.

NHF2 lewis structure lone pairs

The lone pair of electrons is the extra electrons in the lewis structure which do not bond with the side atoms. Let us find out lone pairs in the NHF2 lewis structure.

NHF2 lewis structure has single lone pair of electrons after bonding. In NHF2 lewis structure N has 5 valence electrons and shares 3 with the terminal atoms F and H to complete the octet. So only 2 electrons will be left with no bonding participation.

 In lewis structure, the emphasis is given to the lone pair of the central atom. Hence in the NHF2 lewis structure, the lone pair around N will be taken into consideration.

NHF2 valence electrons

Valence electrons are the outermost electrons in the energy levels which are most probably s and p electrons. Let us calculate valence electrons in NHF2 lewis structure.

In the NHF2, the collective valence electrons are 20 which are calculated by summation of the valence electrons of the individual atoms N, H, and F.

Let us compute the valence electrons in the NHF2.

  • Valence electrons of N for NHF2 = 5
  • Valence electrons of F for NHF2 = 7
  • Valence electrons of H in NHF2 = 1
  • Additions of all the valence electrons in NHF2 = 5 + 7(2) + 1 = 20
  • So, the total number of valence electrons involved in sharing in NHF2 is 20.

NHF2 hybridization

Hybridization is the mixing of atomic orbitals to form a new hybrid orbital with different energies. Let us find out the hybridization of NHF2.

NHF2 has sp3 hybridization according to the steric rule. NHF2 has tetrahedral geometry and AX4 type of bonding. Hence according to that sharing of electrons, it has sp3 hybridization.

Is NHF2 soluble in water?

Solubility is one of the properties where the solute is dissolved in the solvent. Let us check the solubility of the NHF2 in water.

NHF2 is completely soluble in water. It is expected that being an organic compound it will be soluble in an organic solvent instead of an aqueous medium. But it exhibits anomalous behavior.

Why is NHF2 soluble in water?

NHF2 is soluble in the water despite being covalent because of its polarity. It is a polar covalent compound with a net dipole moment. So, its polarity, shape, the electronegativity of F atoms, and the lone pair are the contributors to its solubility in water.

Is NHF2 a molecular compound?

The terms molecular compounds and covalent compounds are used interchangeably. Let us figure it out in the NHF2.

NHF2 is a molecular compound. It exhibits all the properties and satisfies all the criteria related to it. Its traits align with molecularity.

Why is NHF2 a molecular compound?

NHF2 is molecular because it is an organic compound and sharing of electrons is observed in them. All three atoms N, F, and H are non-metals which reduces the domination of electron clouds on 1 atom. Instead, there is uniformity in the charge distribution which proves their molecularity.

Is NHF2 an acid or base?

The acid or base character of any molecule is based on its substituents attached to it. Let us discuss the effect on NHF2.

NHF2 is basic or has basic domination. It’s acid or basic character is not properly differentiated as H and F are part of the molecule. So, it is intermediate between them.

Why is NHF2 acidic or basic?

NHF2 has both acidic and basic characters because of the substituents H and F. But it has more base character because of the fluorine atoms which is a strong oxidizing agent thermodynamically and hence more stable as compared to its other halogen counterparts.

Is NHF2 an electrolyte?

Electrolytes are those species that can dissociate in the aqueous medium. Let us find out whether it is exhibited by NHF2 or not.

NHF2 is not an electrolyte. It has distinguished bonding properties. When dissolved in water does not dissociate into ions which are usually observed in ionic compounds.

Why is NHF2 not an electrolyte?

Unlike electrovalent compounds, the NHF2 is covalent because it is not formed from ions that have positive and negative charges. It is formed by the sharing of electrons. Hence despite being soluble in water it cannot be dissociated like electrolytes which further conduct electricity on dissociation.

Is NHF2 a salt?

Salt is formed when an acid reacts with a base. Let us check whether NHF2 is a salt or not. 

NHF2 is not salt. It is not neutral species. It does exhibit acidic and basic properties. Also, it is not formed by a neutralization reaction.

Why is NHF2 not a salt?

NHF2 is not a salt because it is a strong fluorinating agent for many complexations and coordination reactions. Unlike salts, it is not neutral in its approach and exhibits significant basic character domination because of the fluorine atom. It is an organic compound.

Is NHF2 ionic or covalent?

Bonding is based on the behavior of electrons in the individual atoms when they come together to fulfill the stability. Let us look at the behavior and bonding in the case of NHF2.

NHF2 shows covalent bonding. All of its atoms are non-metals and there is sharing of electrons between them to fulfill the octet criteria.

Why is NHF2 covalent?

NHF2 is covalent because the interactions between the atoms are through the sharing of electrons. Also, there is no big difference in the electron density like the ionic compounds. The intermolecular interactions holding covalent bonds are weaker as compared to their other bonding counterparts.

Conclusion

In a nutshell NHF2 is an organic polar covalent compound used for fluorination. Not much information is available about this compound from an applications and properties perspective. But all its electronic and bonding properties confirm its molecularity.

Read more about  KrCl4 Lewis Structure & Characteristics.

Mansi Sharma

Hello, I am Mansi Sharma, I have completed my master's in Chemistry. I personally believe that learning is more enthusiastic when learnt with creativity. I am a Subject Matter Expert in Chemistry. Let's connect through LinkedIn: https://www.linkedin.com/in/mansi-sharma22

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