Home » Ask & Discuss » Chemistry
« Back to Discussion

Inorganic Chemistry

New kid on the Block

Joined:	29 Apr 2012
Post:	1

29 Apr 2012 09:34:45 IST

0 People liked this

491

p block elements

Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Chemistry , Inorganic Chemistry

how to study the reactions under the p block elements in a easy and a successful way ?

Comments (4)

Vikram Saxena

Blazing goIITian

Joined: 1 Apr 2007

Posts: 4025

6 May 2012 19:27:09 IST

Like 0 people liked this

p-Block chemistry

27.1 General aspects and trends in the p block

• Most p-block elements can adopt more than one oxidation state, and they

normally vary in units of 2.

• Group 13 compounds act as Lewis acids, as can compounds of Group 14 and

15 if they contain elements of the third period or lower.

• Group 15, 16, and 17 compounds have lone pairs, so they can act as Lewis

bases, but the strength of the base depends on the type of orbital the electron

pair is in.

Trends across the periods of the p block

• The metallic character of an element decreases from left to right across a

period of the p block due to increasing ionization enthalpies.

• The maximum oxidation state increases across a period, though expansion of

the octet is not possible for the second period elements.

• The ionic character of the oxides and halides decreases across each period.

• The acidic character of the oxides increases across each period.

Vikram Saxena

Blazing goIITian

Joined: 1 Apr 2007

Posts: 4025

6 May 2012 19:27:09 IST

Like 0 people liked this

p-Block chemistry

27.1 General aspects and trends in the p block

• Most p-block elements can adopt more than one oxidation state, and they

normally vary in units of 2.

• Group 13 compounds act as Lewis acids, as can compounds of Group 14 and

15 if they contain elements of the third period or lower.

• Group 15, 16, and 17 compounds have lone pairs, so they can act as Lewis

bases, but the strength of the base depends on the type of orbital the electron

pair is in.

Trends across the periods of the p block

• The metallic character of an element decreases from left to right across a

period of the p block due to increasing ionization enthalpies.

• The maximum oxidation state increases across a period, though expansion of

the octet is not possible for the second period elements.

• The ionic character of the oxides and halides decreases across each period.

• The acidic character of the oxides increases across each period.

Tarun Garg

Blazing goIITian

Joined: 21 Mar 2012

Posts: 1457

6 May 2012 23:08:13 IST

Like 0 people liked this

dont cram them try to figure out the reason 4 them and make short trick then u wil nt forget them life long

Harshad Suresh Korde

New kid on the Block

Joined: 3 May 2012

Posts: 7

6 May 2012 23:31:52 IST

Like 0 people liked this

p block elements contain all solid liquid and gasious state elements...so first.. make a group of them and just make any suitable trick ...eg.make any sentence with them.....then u definitely will not forget....

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team