Download Period Table, valence Electrons and Ion Notes

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Livermorium wikipedia, lookup

Oganesson wikipedia, lookup

Moscovium wikipedia, lookup

History of molecular theory wikipedia, lookup

Periodic table wikipedia, lookup

Tennessine wikipedia, lookup

Extended periodic table wikipedia, lookup

Ununennium wikipedia, lookup

Unbinilium wikipedia, lookup

Transcript
Periodic Table Notes
IONS
Ion- a charged atom (# of electrons change)
Example:
Na +1
11 p+
23-11 = 12no (Mass #- Atomic #)
11 – (+1) = 10 e- (atomic # - Charge)
*Since there are 11 p+ and 10 e-, there are more +’s than –‘s creating a + change
for the atom.
Example:
O-2
8 p+
16-8= 8 no
8 – (-2) = 10 e*Since there are 8 p+ and 10 e-, there are more –‘s than +’s creating a negative
charge.
Types of IONS
Cation
 Positive ion
 Loses electrons
Anion
 Negative ion
 Gains electrons
Valence Electrons
Valence Electrons: the number of electron in the outer energy level of an atom.
*We can figure this out by writing out the electron configuration for an element.
Example:
Na = 1s2 2s2 2p6 3s1
Add up the e-‘s found in the last energy level, in this case there is only 1 so Na has
1 valence e**You have to do this for the Transition metal every time**
*All the other element
will follow this trend