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Why don't electrons stay in the same energy level

Started by Yusuf72 | Last post by Enthalpy December 15, 2016, 01:55:03 PM

4 Replies
1453 Views
Last post December 15, 2016, 01:55:03 PM
by Enthalpy
Why don't NaCl crystals attract one another?

Started by Decessus00 | Last post by Borek April 09, 2009, 10:12:18 AM

3 Replies
3156 Views
Last post April 09, 2009, 10:12:18 AM
by Borek
why fan melts i ce faster

Started by jack1234 | Last post by IITian December 23, 2007, 07:32:35 AM

3 Replies
3680 Views
Last post December 23, 2007, 07:32:35 AM
by IITian
Why Fluorine mass is 18.99, not 19 exactly?

Started by kciray | Last post by AdiDex January 05, 2016, 03:19:26 AM

7 Replies
3363 Views
Last post January 05, 2016, 03:19:26 AM
by AdiDex
Why gold is able to counter allergies to nickel.

Started by SimoneMeyer | Last post by SimoneMeyer August 24, 2009, 05:50:04 PM

6 Replies
3485 Views
Last post August 24, 2009, 05:50:04 PM
by SimoneMeyer
why H has a smaller atomic radius than He

Started by alexanda | Last post by alexanda August 11, 2014, 10:19:07 PM

2 Replies
2427 Views
Last post August 11, 2014, 10:19:07 PM
by alexanda
Why H3O+ = H+??

Started by Wil" | Last post by shelanachium November 08, 2007, 02:47:28 AM

2 Replies
37378 Views
Last post November 08, 2007, 02:47:28 AM
by shelanachium
1 Replies
9630 Views
Last post May 21, 2010, 09:48:28 AM
by cliverlong
Why heat oxalic acid?

Started by Johnny Mac | Last post by jm1zz August 14, 2007, 06:44:55 AM

6 Replies
16767 Views
Last post August 14, 2007, 06:44:55 AM
by jm1zz
Why HF (hydrogen fluoride) is not soluble in water?

Started by Ahmed Abdullah | Last post by wilson March 03, 2007, 10:40:18 AM

4 Replies
20308 Views
Last post March 03, 2007, 10:40:18 AM
by wilson
Why iron looses 2 or three electrons to formss Fe2+ and Fe3+?

Started by Alok | Last post by Alok July 12, 2007, 01:50:50 AM

5 Replies
17348 Views
Last post July 12, 2007, 01:50:50 AM
by Alok
why is (NH4)2HPO4 used in the gravimetric analysis of magnesium?

Started by ajax0604 | Last post by Borek January 10, 2014, 07:57:25 AM

1 Replies
1093 Views
Last post January 10, 2014, 07:57:25 AM
by Borek
Why is +3 Chromium's (Cr) "favorite" oxidation number???

Started by danland | Last post by Morphic flip October 12, 2006, 12:53:23 PM

1 Replies
2693 Views
Last post October 12, 2006, 12:53:23 PM
by Morphic flip
Why is 2-methyl 1,4 cyclopentadiene wrong???

Started by mitko1994 | Last post by Matias Ekstrand April 10, 2010, 12:19:04 AM

1 Replies
2469 Views
Last post April 10, 2010, 12:19:04 AM
by Matias Ekstrand
Why is a water molcule in a V shape?

Started by quantum_toothpaste | Last post by uvcyclotron June 27, 2010, 02:18:19 AM

2 Replies
7045 Views
Last post June 27, 2010, 02:18:19 AM
by uvcyclotron
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