CHEM 1010- EXAM 2 (MODULE 6) QUESTIONS & VERIFIED CORRECT ANSWERS

CHEM 1010- EXAM 2 (MODULE 6) QUESTIONS &
VERIFIED CORRECT ANSWERS
1. Electron Dot electrons in the outermost shell
Structures:
Valence Electrons play a significant role in that atom's chemical properties

can be determined based on the group number on the periodic table

2. Electron Dot
Structures: shows the valence electrons around an atom
Electron Dot
Structure helpful to understand ionic and covalent
(Lewis dot
symbol) bonding
3. Dawing
electron dot for elements in the 4th period and beyond still consider only 8 valence
symbols electrons

1. Incorporate all valence electrons (determine from periodic table).

2. Place one on each of four sides, then

pair up. (exception: helium (only two -

stay paired))

4. Electron Dot Sym- paired electrons: not normally involved in bonding
bols:
Paired vs. unpaired electrons: strong tendency to participate in chemical bonding
Un-paired
because they want to pair up

5. Ion Atom that has gained or lost electron(s)

an atom or molecule with a net electric charge due to the loss or gain of
one or more electrons.

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, CHEM 1010- EXAM 2 (MODULE 6) QUESTIONS &
VERIFIED CORRECT ANSWERS
6. Ions In a
neutral atom number of protons = number of electrons

7. Ions:
Atom that Atom that has gained electron(s) - NEGATIVELY CHARGED
has gained
or lost




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