Question

question 1 (1 point)
an atoms reactivity is determined by its ______.

a \tprotons
b \tsize; smaller things are more reactive
c \tnucleus
d \telectron configuration

Explanation:

• Option a: Protons determine the element's identity, not reactivity.
• Option b: Atom size alone doesn't determine reactivity; it's more about electron interactions.
• Option c: The nucleus (protons + neutrons) is stable and not involved in chemical reactivity.
• Option d: Electron configuration, especially valence electrons, dictates how atoms bond/react.

Answer:

d. electron configuration