Electrons and Chemical Bonding
Terms
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- An atom that has fewer than 8 valence electrons is more _______, or more likely to form a bond than an atom with 8 valence electrons.
- reactive
- The atomic number represents the number of __________ and _________ in the atom
-
protons
electrons
- The levels farther from the nucleus contain electrons that have _____ energy that levels closer to the nucleus.
- more
- Chemical bonds involve the _________ in the atoms.
- electrons
- Atoms bond by gaining, losing , or sharing elecrons in order to have a _______ outermost energy level.
- filled
- The number of electrons in an atom can be determined by the _________ ___________.
- Atomic number
-
The first energy level can hold up to _____ electrons.
The second energy can hold up to ___ electrons.
The outermost energy level is considered to be full if it contains ___ electrons. -
2
8
8 - The electrons in the outermost energy level of an atom are called ___________ electrons.
- valence
- The joining of atoms to form new substances is called ____________ ___________.
- chemical bonding
- Most atoms form bonds using only the electronsin their ___________ energy level.
- outermost
- A force of attraction that holds two atoms together is called a ___________ _________.
- chemical bond
-
1- Li, Na, _
2- Be, __, Ca
3- _, Al
4- _, Si
5- N, _
6- -, S
7- F, __ -
K
Mg
B
C
P
O
Cl