The ______ _____ of an element determines its chemical properties. A) atomic number B) valence electrons C) atomic mass D) neutron mass its multipl choice.

The ______ _____ of an element determines its chemical properties. A) atomic number B) valence electrons C) atomic mass D) neutron mass its multipl choice.

The ______ _____ of an element determines its chemical properties. A) atomic number B) valence electrons C) atomic mass D) neutron mass its multipl choice.

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