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alipeace11
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what are two properties of representitive elements?
- very reactive
- soft, (able to be cut with a knife)
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what are two properties of metals (in general)?
- electrically conductive
- malleable
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what are two properties of nonmetals?
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what are two properties of metalloids?
- properties of metals and nonmetals
- semi-conductors
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what are two properties of alkali metals?
- softer than most metals
- most reactive
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what are two properties of alkaline earth metals?
- very reactive
- not found free in nature
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what are three properties of halogens?
- very reactive
- low melting points
- create compounds essential for body function
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what are two properties of noble gases?
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what are two properties of transition metals?
- vary greatly in reactivity
- most have high melting points
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what are two properties of inner transition metals?
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Where are representitive elements?
left most column
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Where are nonmetals?
to the right of the jagged line
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Where are the metalloids?
surrounding dark line
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Where are the alkali metals?
left-most column
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Where are the halogens?
2nd column from the right (ends in p5)
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Where are the alkaline earth metals?
2nd column from the left
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Where are the noble gases?
right most column
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Where are the transition metals?
in the d block
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Where are the inner transition metals?
f block
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What does the aufbau principle say?
electrons go into lowest energy orbital 1st
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What does hund's rule say?
one electron goes into each orbital of a sublevel until all have electrons with parallel spins
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What does the pauli exclusion principle say?
orbital describes a max of 2 electrons and they must have opposite signs
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horizontal rows on a periodic table are referred to as _______.
periods
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vertical columns on a periodic table are referred to as _______.
groups/families
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How many orbitals are in th s,p,d and f sublevels?
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What is the max number of electrons the 3rd principal energy level can have?
18 electrons
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What designates principal energy level?
n
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What is the principal energy level?
how many "rings" an electron has or how many rows down it is
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What is the sublevel?
has all orbitals (boxes in box notation for electron configurations) for s, p,d or f
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What is an orbital?
- box in electron configuration.
- can hold 2 electrons maximum
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What is the maximum number of elecrons a d sublevel can hold?
10 electrons
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What is the max electrons a p orbital can hold?
2 electrons
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