Which of the following properties indicate that an element is a metal. It I. reacts...
CHEMISTRY
WAEC 2022
Which of the following properties indicate that an element is a metal. It
I. reacts with oxygen to form an acidic oxide II. forms ionic chlorides III. has variable oxidation states IV. displaces hydrogen from dilute HCl
- A. I and III only
- B. I and II only
- C. II and IV only
- D. I, II, III and IV
Correct Answer: C. II and IV only
Explanation
- Ionization behaviour; The atoms of non-metals usually have four to seven valence electrons. They have a great tendency to ionize by accepting electrons to form negative ions.
- Reaction with acids; A metal which is more electro positive than hydrogen readily displaces the hydrogen ion, H+, from an acid.
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *