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

Yes. An element’s reactivity decreases along with its atomic number.
Yes. An element’s reactivity decreases along with its atomic number.

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.

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.

No. An element’s reactivity does not necessarily decrease along with its atomic number. Reactivity is determined by the number of electrons in the outermost shell, so elements with similar outer electron configurations can have similar reactivities regardless of their atomic number.