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DIMITRI MENDELEYEV-MODERN PERIODIC TABLE Flashcards | StudBud
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DIMITRI MENDELEYEV-MODERN PERIODIC TABLE
DIMITRI MENDELEYEV-MODERN PERIODIC TABLE
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CHEMISTRY
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Answers
1
How many elements are naturally occurring ?
116
92
63
118
2
Each horizontal row in the periodic table is called a ...........................
group
metal
period
nonmetal
3
The term “eka” is derived from sanskrit and means “....................”.
pre
first
end
last
4
How elements are arranged in the modern periodic table?
according to neutron number
according to relative mass
according to atomic number
according to atomic masses
5
when was D.Mendeleev born?
1453
1980
1934
1834
6
What is the symbol of Gold?
Ag
Gd
Go
Au
7
Mendeleev`s time How many elements were known?
92
118
63
116
8
Today how many elements are known?
118
63
116
92
9
How elements are arranged in the D.Mendeleev`s periodic table?
according to the number of protons
according to neutron numbers
according to atomic numbers
according to atomic masses
10
where was D.Mendeleev born?
Tobolsk
Moscow
St.Petersburg
Kazan
11
What is the symbol of Uranium
U
W
Ura
Ur
12
What is the name of 7A group?
Nitrogen group
Noble gases
Earth metals
Halogens
13
B groups are called .....................
alkali metals
alkaline earth metals
rare metals
transition metals
14
How many total number of groups in the periodic table?
8
18
16
20
15
What is the name of 1A group
Alkaline Earth metal
Carbon group
Earth metal
Alkali metal
