20. which aspect of electrons is important when writing a chemical formula
A. equality
B. neutrality
C. negativit
D. positivity
21. if the oxidation number of metal and nonmetal are numerically equal, is the ratio of the compound
A. 1:1
B. 2:2
C. 3:3
D. 4:4
22. when Na+¹ combines with NO3–¹, it will yield to:
A. Na(NO3)
B. NA (NO) 3
C. NaNO3
D. (Na)NO3
23. WHAT HAPPENS WHEN A GROUP OF ATOMS BONDED COVALENTLY
A. IT BECOMES ANION
B. IT BECOMES CATION
C. IT BECOMES ONION
D. IT BECOMES POLYATOMIC ION
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Explanation:
A
B
C
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