Mendeleev arranged the known chemical elements in a table according to increasing

Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?

Which list of elements contains only metals

At room temperature, none of the metals are

Which general statement does NOT apply to metals?

Group 17 (7A) of the periodic table contains the

As you move from left to right across a period, the number of valence electrons

The tendency of an element to react is closely related to

Which statement is NOT true about the elements fluorine, chlorine and iodine?

Group 18 noble gases are inactive because

Atoms of the elements that are in the same group (or family) have the same number of

Valence electrons determine an atom's

Oxygen has an atomic number of 8. This means that an oxygen atom has

Which statement about the alkali metals is correct?

Which statement about the noble gases is correct?

Carbons and other nonmetals are found in which area of the periodic table?

How is the atomic mass of an element determined?

Compared with Group 1 elements, Group 17 elements have

An alkali metal has one valence electron, while an alkaline earth metal has

In the periodic table,

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