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What group is called the Noble Gases?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
What are the horizontal rows on the periodic table called?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
What are the elements in column 7A (17) called?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
Why are some elements written in white letters?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
How many vaence electrons do the alkaline earth metals have?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
Why are the chemical symbols for elements Hg and Br colored purple?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
What happens o the number of valence electrons as you move across the periodic table?
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
Co, Y, Ag and Tc are all
They do not exist in nature.
8A (18)
2
transition metals
increases towards right
Halogens
They are liquids at room temperature.
Periods
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