What trend does the reactivity of nonmetals show in a periodic table? 1. the reactivity changes are random with no real trends 2. reactivity increases from left to right across the periodic table ** 3. reactivity decreases from left to right across the periodic table 4. reactivity increases from right to left across a periodic table

2. Reactivity increases from left to right across the periodic table.

Explanation:

Period - reactivity decreases as you go from left to right.

Period - reactivity increases as you go from the left to the right.

Group - reactivity decreases as you go down the group.

as technology advances, new experiments often expose problems in accepted theories. c

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spectral lines lyman is one set