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How well do you know Periodic table?
The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations (electron shell model), and recurring chemical properties.
Author:
Pena
| 2nd January 2014 |
Comment (
1
)
Who invented Periodic table?
Antoine Lavoisier
Alfred Nobel
Dmitri Mendeleev
What is chemical character for Calcium?
K
Kr
Ca
When was Periodic table invented?
1978
1745
1869
How many rows are there in Periodic table?
18
10
7
What is Ag?
Silver
Gold
Stone
How many columns are there in Periodic table?
7
10
18
What is chemical character for Phosphorus?
P
O
F
How do we call a horizontal row in periodic table?
Categories
Blocks
Periods
What is Si?
Silicon
Sulfur
Sodium
How do we call elements in the last column?
Halogens
Alkali metals
Noble gases
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