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How are the elements arranged in the periodic table?
Who started the development of the periodic table and arranged the elements according to their relative atomic mass?
Which group are alkali metals placed in?
The vertical columns on the periodic table are called…
Which group on the periodic table are called noble gases?
What is the central block of the periodic table called?
In the periodic table, the halogens are found in…
Where in the periodic table are non-metals found?
The reactivity of group 1 elements increases…