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AU / Biology / BIOL 1020 / How do you determine valence electrons?

How do you determine valence electrons?

How do you determine valence electrons?


School: Auburn University
Department: Biology
Course: Principles of Biology
Professor: Zhong
Term: Fall 2015
Tags: Bio 1020, Sundermann, auburn, Bowling, chapter 2, atoms, and Molecules
Cost: 25
Name: Chapter 2 Atoms and Molecules
Description: Chapter 2 Atoms and Molecules *** dacton is supposed to be Dalton, I miss read the writing on the board!***
Uploaded: 01/17/2016
3 Pages 83 Views 12 Unlocks

Hollis Runolfsdottir (Rating: )

Yes YES!! Thank you for these. I'm such a bad notetaker :/ will definitely be looking forward to these

Biology 1020

How do you determine valence electrons?

nuaru 13. 2011


Atoms and Molecules

Valence Electrons

outer must electrons

· Valence numbero how many bonds can an atom


valence #




bonds - need at least atoms

cavaleut catons share electrons

How do you identify an ionic bond?

-'non polar covalent - they share - Hydungun (He er'H-H)

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Sume charge on buta

. polak covalent band - atoms shure e unequally

What is carbon dating and how does it work?

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•jon - a charged atene 'cation - positively charged wton 'anics - bregutively charged atom If you want to learn more check out How does exhaustion lead to death?



Na ll protons

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Biology 1921

January 13,2014

1 Chapter 3 Atoms and Molecules_peyz If you want to learn more check out What do correlations show?


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determine reactivity of an atom orbit the nucleus!

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like to be mis pairs e differ is energy level - mare e from Shell I to shell 2 = must add energy

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January 13, 2016

| Chapter 2 - Atoms and Molecules


dy Sour

Elements - 92 naturally occurring - rest are made in Jab

· Pure ferm - cannot be broken down Helm N - most important for living things larkpo present is small amounts (trace elements)

Molecules / compounds - atoms BOND


-- Nalsodium) -pure-forme - explosive

-Cl lablarine)-poison gas

- NaCl - table salt Trace elements

- small amount ex ijodine Atom - smallest unitat element

- subatomia particles

Protons (+)-in nucleus

-lamu (dacten) Electrons (-) - nat ins nucleus -orbit

alltoo small to measure)

Neutrons - neutral -in nucleus - - lamu



I Atomic number = # of protons in an atom

it pratium leveryday) 2. In a neutral atom - # pratens = #clectrons 3. Atomic weight (muss)

La #prótons + # neutrons

He -2 pretons - @electronic2 neutrons Co Na -12 neutrons - 11 protons - Helectrons 4._ Isotopes - different stoms_sf the sumse element

a. # of neutron's varies (wary atomic weight) k stable or unstable (radioactive) !

Radioactive - undergo 'olecay" limit radiation) d. "half-life" - time requires for bult of the atoms in the sample to


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