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19 Cards in this Set

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The number of electrons needed to fill shells #1, #2, and #3 are
2,8,18
Sodium has an atomic number of eleven. Its electron configuration for shells #1, #2, and #3 is
2,8,1
The electrons that form or are reactive in forming an eight electron configuration are called the
valence shell
Neon, which has the atomic number of ten, has an electron configuration for shells #1 and #2 of
2,8
Phosphorus, which has the atomic number of fifteen, has an electron configuration for shells #1, #2, and #3 of ___ and will ___ to satisfy the rule of eights.
2,8,5 and gains 3 electrons
An atom that carries a charge is called
an ion
A sodium ion, Na+, is an example of
an cation
A chloride ion, Cl-, is an example of
an anion
The attractive force which holds oppositely charged ions together is called
an ionic bond
The number of electrons that form a single covalent bond is
two (a pair)
The number of electrons that form a double covalent bond is
four (two pair)
How many pairs of electrons are involved in the covalent bond between two atoms of oxygen (atomic number of eight)?
two
The molecular formula of oxygen is
O2
How many pairs of electrons form the covalent bonds in a molecule of methane which consists of a carbon atom with four hydrogen atoms? (carbon-atomic number 6, hydrogen-atomic number 1)
four
The molecular formula of methane is
CH4
Using a molecular model kit, the holes in the balls ("atoms") represent
covalent bonding sites
Using a molecular model kit, the dowels and springs represent
covalent bonds
A reaction that joins smaller molecules into a larger molecule and produces water is called
dehydration synthesis
A reaction that splits a larger molecule into smaller molecules by the addition of water is called
hydrolysis