Electronegativity

Electronegativity is the strength or ability of an atom to gain electrons.

EN and EA affinity differ in that EN is ability to gain electrons whereas EA is the desire to gain electrons. Also, EN is NOT a measured value—it is only relative.

Trend: As you proceed from:

LEFT → RIGHT      EN ↑

BOTTOM → TOP  EN ↑


Note:

Cl has the most EA

F has the most EN

EN1

Wikimages

Why? Same reasoning as electron affinity trend.

Electronegativity can be used to determine polarity.


Oxide Trends

Oxides are compounds which contain the element oxygen. Oxides can be acid, basic, or both.

The general trend is all metals combining with oxygen which lie to the LEFT of Aluminum will be BASIC (+ metals attract a OH)

All elements to the RIGHT of Aluminum will be ACIDIC (– nonmetals attract H+)

Aluminum oxide can be BOTH ACIDIC AND BASIC, or amphoteric.

EN2

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s