A student attempts to arrange four elements (as shown below) in order from most reactive to least reactive.
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Is the arrangement correct, and why (or why not)?
(1 point)
Responses
No. An element’s reactivity decreases from right to left on the periodic table.
No. An element’s reactivity decreases from right to left on the periodic table.
No. An element’s reactivity decreases as atomic mass increases.
No. An element’s reactivity decreases as atomic mass increases.
Yes. An element’s reactivity decreases from left to right on the periodic table.
Yes. An element’s reactivity decreases from left to right on the periodic table.
Yes. An element’s reactivity decreases along with its atomic number.
No. An element’s reactivity decreases from left to right on the periodic table.
Are you sure, why?
I apologize for the incorrect response. The correct answer is:
No. An element’s reactivity decreases from left to right on the periodic table.
Reactivity generally decreases from left to right across a period on the periodic table. As you move from left to right, the atomic number increases, and the number of electron shells remains the same. This results in a stronger attraction between the nucleus and the valence electrons, making it harder for the atom to lose or gain electrons, thus decreasing reactivity.