alleryThe hybridisation of nitrogen in ammonia (NH₃) is:
Asp
Bsp²
Csp³
Dsp³d
Answer & Solution
Correct answer: C. sp³
1. N in NH₃ has 3 bond pairs and 1 lone pair = 4 electron regions.
2. Four hybrid orbitals required ⇒ sp³ hybridisation.
3. Geometry: trigonal pyramidal (3 H + 1 lone pair); bond angle ~107° (lone-pair compression).
_Source: syllabus Chem Ch 4 §4.6 Hybridisation in NH₃_
Keep practising Chemical Thermodynamics
Browse all Chemical Thermodynamics questions for AP Intermediate 1st Year, or explore more Chemistry topics.
Related questions
A process whose enthalpy and entropy changes share the same arithmetic sign will show:At minus 10.00 degrees Celsius the entropy change of the universe for melting is negative,Melting is described as spontaneous at 10.00 degrees Celsius because at that temperature:K_sp of a sparingly soluble salt AB at 25 °C is 4 × 10⁻¹⁰. Molar solubility s of AB is:A buffer solution is most resistant to pH change when:K_w (ionic product of water at 25 °C) is:The pH of a 0.01 M HCl solution is:For an exothermic reaction at equilibrium, raising the temperature: