kayla mcauley. chemical reactivity some elements are highly reactive while others arent a chemical...
TRANSCRIPT
IONS & IONIC COMPOUNDSKayla McAuley
Chemical Reactivity
Some elements are highly reactive while others arent
A chemical reaction: A transformation resulting in a change of composition, constitution and/or configuration of a compound ( referred to as the reactant or substrate )-http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/react1.htm
Noble Gases Are The Least Reactive Elements
Group 18 in periodic table They show almost no activity
because there stable ! Meaning they have all of there electrons in there outer shell
These gases are helium, neon, argon, krypton, xenon, & radon
Alkali Metals & Halogens Are Most Reactive Elements
Because of the octet rule, an atom whose outer s & p orbital's do not match the electron configurations of a noble gas will react to lose or gain electrons so outer orbital's will be full
Words To Know !!!
Ion : an atom, radical, or molecule that has gained or lost one or more electrons an has a negative or positive charge
Cation : an ion that has a positive charge
Anion : an ion that has a negative charge
Did You Know ?
Many atoms form stable ions have noble-gas configurations !
Helium is an exception from the rule … it only has 2 !
Sources
http://my.hrw.com/tabnav/controller.jsp?isbn=0030724945