Write ethane, ethene and ethyne in order of decreasing electronegativity of carbon in them.

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> [!TLDR]
> More s-character means the hybrid orbital's electrons are held closer to the nucleus, making that carbon more electronegative; ethyne's sp carbon has the most s-character.
>
> The carbon atoms in these hydrocarbons are hybridised differently:
> - **Ethane** ($C_2H_6$): $sp^3$ hybridised carbon, **25%** s-character.
> - **Ethene** ($C_2H_4$): $sp^2$ hybridised carbon, **33%** s-character.
> - **Ethyne** ($C_2H_2$): $sp$ hybridised carbon, **50%** s-character.
> …

Hybridization	Orbitals Mixed	Number of Hybrids	Geometry	Bond Angle	Example
$sp$	one $s$ + one $p$	2	Linear	$180^\circ$	$\text{BeCl}_2$
$sp^2$	one $s$ + two $p$	3	Trigonal planar	$120^\circ$	$\text{BF}_3$
$sp^3$	one $s$ + three $p$	4	Tetrahedral	$109.5^\circ$	$\text{CH}_4$

Q.Write ethane, ethene and ethyne in order of decreasing electronegativity of carbon in them.

Concept understanding — Orbital Hybridization Theory

Orbital Hybridization Theory – From Intuition to Precision

The Problem That Started It All

The Core Intuition

The Precise Statement

The Three Common Hybridizations

How It Works: The Methane Example

Q.Write ethane, ethene and ethyne in order of decreasing electronegativity of carbon in them.

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