MOLECULAR POLARITYFIELD NOTE 134 / 175
Is N2H4 polar or nonpolar?
N2H4 is polar because its two locally pyramidal nitrogen centers form a non-planar molecule with a net dipole.
Hydrazine · pyramidal at each N
The molecule in space
Drag to turn the molecule. Show angles to read the model geometry.
01 / MODEL RECORDPubChem 3D coordinates. Atom sizes and bond thickness are illustrative.How model data is used ↗
Why N2H4 is polar
Hydrazine consists of two NH2 groups connected by an N–N bond, with each nitrogen bearing a lone pair. Nitrogen (3.04) is more electronegative than hydrogen (2.20).
What to notice
Each nitrogen in hydrazine has its own local pyramidal environment. The non-planar arrangement of the two NH2 groups prevents a simple cancellation argument.
Common questions about N2H4
- 01
What does the Lewis structure of N2H4 show?
The connectivity is H2N–NH2. Each N makes three single bonds and keeps one lone pair.
- 02
What is the molecular geometry of N2H4?
The arrangement around each nitrogen is pyramidal. The 3D model shows representative bond angles of 109.1° and 106.1° and 109.2°. These angles come from the displayed model coordinates.
- 03
What is the molar mass of N2H4?
N2H4 has an approximate molar mass of 32.05 g/mol, calculated from its formula using abridged standard atomic weights. Natural isotope variation can change the last digits.