Question

C. Oxygen, nickel, aluminu
D. gold, silver, platinum
12. Which set of elements are nonmeta
A carbon, chlorine, fluorine
B. calcium, magnesium, barium
describes acids?​

Answer 1

A. Carbon, Chlorine, Fluorine

Answer 2

Answer:

oxygen , nickel , aluminu are non metals !

fluorine and barium is the kind of acids .

Explanation:

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