Chapter 2: Discussion Questions (page 46)
Q.16. Why do we call Ba(NO3)2 barium nitrate, but we call Fe(NO3)2 iron(II) nitrate?
Answer
Barium can form only one cation Ba+2, whereas iron forms two cations with charge . So the iron charge is represented in a bracket during the formation of its compound.
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Would you expect each of the following atoms to gain or lose electrons when forming ions? Whation is the most likely in each case?
a. Ra
b. In
C. P
d. Te
e. Br
f. Rb
Question:Which of the following is(are) correct?
a. 40Ca2+ contains 20 protons and 18 electrons.
b. Rutherford created the cathode-ray tube and was the founder of the charge-to-mass ratio of anelectron.
c. An electron is heavier than a proton.
d. The nucleus contains protons, neutrons, and electrons.
List the noble gas elements. Which of the noble gases has only radioactive isotopes? (Thissituation is indicated on most periodic tables by parentheses around the mass of the element. See inside front cover.)
b. Which lanthanide element and which transition element have only radioactive isotopes?
Question:How would you name HBrO4, KIO3, NaBrO2, and HIO? Refer to Table 2.5 and the acidnomenclature discussion in the text.
The isotope of an unknown element, X, has a mass number of 79. The most stable ion of the isotope has 36 electrons and forms a binary compound with sodium having a formula of . Which of the following statements is(are) true? Correct the false statements.
a. The binary compound formed between X and fluorine will be a covalent compound.
b. The isotope of X contains 38 protons.
C. The isotope of X contains 41 neutrons.
d. The identity of X is strontium, Sr.
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