Hydrochloric acid (HCI) is a strong acid made from two reactive chemicals, hydrogen (H) and
chlorine (CI). Palladium (Pd) and platinum (Pt) are rare but valuable metals. Highly reactive chemicals are sometimes stored in
argon (Ar) gas because it does not react with most substances.
Which of these elements is an almost completely nonreactive nonmetal like argon?
A. neon (Ne)
B. chlorine (CI)
C. platinum (Pt)
D. hydrogen (H)
Answers: 1
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Hydrochloric acid (HCI) is a strong acid made from two reactive chemicals, hydrogen (H) and
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