Chemistry
Grade-9
Easy
Question
Which color on the image of the periodic table corresponds with the noble gases?
- Red
- Black
- Blue
- Orange
Hint:
The last group is called noble gases.
The correct answer is: Black
- In Mendeleev's periodic table there are 118 elements arranged in 18 groups and 7 periods.
- The first group is called alkali metals.
- The last group is called noble gases and has completely fulfilled shells.
- The black color represents the noble gases.
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