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thee Periodic table

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QuestionAnswer
Periodic table ? table of element arranged by atomic number
Before the periodic table *Was a mess ,*Imagine going to the grocery store , with no organization * no organization of elements ,* difficult to find infomation *chemistry didnt make sense
period (series) horizantal rows in the element-oranized from left to right
Dmitri Mendeleev russian chemist who made the first periodic table ( father of the perdoic table)
Dmitri medeleev - how his worked put elements in rows by atomic mass "coloums in how they recated
Periodic table ? table of element arranged by atomic number
Before the periodic table *Was a mess ,*Imagine going to the grocery store , with no organization * no organization of elements ,* difficult to find infomation *chemistry didnt make sense
Dmitri Mendeleev russian chemist who made the first periodic table ( father of the perdoic table)
Dmitri medeleev - how his worked put elements in rows by atomic mass "coloums in how they recated
Dmitri medeleev- some problems left blanks for undiscovered elements , turned out right , blank spaces broke the pattern
current periodic table now elements are put into rows by increasing atomic number , horizantal rows caused periods or series labled 1-7 . vertial colloms are called groups families labeled 1-18
group (family) 1 elements in the SAME group have SIMILAR chemicial & physical properties .
group( family) contuied 2 they have the same number of valence electrons * they will form the same kinds of iron
group ( family ) contuied 3 families may be ONE column,or SEVERAL columns put together.
groups (family ) contuied ?????? 4 families have NAMES rather than ________
Created by: aj123
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