29) Predict the number of valence electrons for a Group 5A/15 element.(a) 2 (b) 3(c) 5 (d) 8(e) 1530) Which of the following groups has a predictable ionic charge of three positive?(a) Group 3A/13 (b) Group 3B/3(c) Group 5A/15 (d) Group 5B/5(e) Group 8A/1831) What is the electron configuration for a sulfide ion, S2-?(a) 1s22s22p63s23p2(b) 1s2 2s22p63s23p4(c) 1s22s22p63s23p6(d) 1s2 2s22p63s23p44s2(e) 1s22s22p63s23p64s232) The compound NH3is classified as which of the following?(a) ionic (b) polyatomic ionic(c) binary molecule (d) binary acid(e) oxyacid33) Aqueous H2SO4 is classified as which of the following?(a) ionic (b) polyatomic ionic(c) binary molecule (d) binary acid(e) oxyacid34) The NH4+ ion is classified as which of the following?(a) monoatomic cation (b) monoatomic anion(c) polyatomic cation (d) polyatomic anion(e) none of the above35) What is the chemical formula for the oxide ion?(a) O-(b) O2-(c) O2-(d) O22-(e) none of the above36) What is the chemical formula for the compound composed of Sr2+and Brions?(a) SrBr (b) Sr2Br(c) SrBr2(d) Sr2Br2(e) none of the above37) What is the IUPAC name for Hg2Cl2 ?(a) mercury chloride (b) mercurous chloride(c) mercuric chloride (d) mercury(I) chloride(e) mercury(II) chloride38) What is the chemical formula for magnesium chromate?(a) MgCrO4(b) Mg(CrO4)2(c) Mg2CrO4(d) Mg2(CrO4)3(e) Mg3(CrO4)239) What is the IUPAC name for Fe2(SO4)3?(a) iron sulfate (b) ferrous sulfate(c) ferric sulfite (d) iron(II) sulfate(e) iron(III) sulfate40) What is the IUPAC name for SF6?(a) sulfur tetrafluoride (b) sulfur hexafluoride(c) sulfur heptafluoride (d) sulfur octafluoride(e) sulfur nonafluoride41) What is the chemical formula for nitric acid?(a) HNO2 (aq)(b) HNO3 (aq)(c) H2NO2 (aq)(d) H2NO3 (aq)(e) NH3 (aq)42) What is the IUPAC name for aqueous HCN?(a) hydrogen cyanide (b) hydrocyanic acid(c) cyanous acid (d) cyanic acid(e) percyanic acid43) Which of the following formulas represents an element in its natural state?(a) H2(b) N2(c) O2(d) all of the above(e) none of the above please answer all questions
29) Predict the number of valence electrons for a Group 5A/15 element.
(a) 2 (b) 3
(c) 5 (d) 8
(e) 15
30) Which of the following groups has a predictable ionic charge of three positive?
(a) Group 3A/13 (b) Group 3B/3
(c) Group 5A/15 (d) Group 5B/5
(e) Group 8A/18
31) What is the electron configuration for a sulfide ion, S
2-
?
(a) 1s2
2s2
2p6
3s2
3p2
(b) 1s2
2s2
2p6
3s2
3p4
(c) 1s2
2s2
2p6
3s2
3p6
(d) 1s2
2s2
2p6
3s2
3p4
4s2
(e) 1s2
2s2
2p6
3s2
3p6
4s2
32) The compound NH3
is classified as which of the following?
(a) ionic (b) polyatomic ionic
(c) binary molecule (d) binary acid
(e) oxyacid
33) Aqueous H2SO4
is classified as which of the following?
(a) ionic (b) polyatomic ionic
(c) binary molecule (d) binary acid
(e) oxyacid
34) The NH4
+
ion is classified as which of the following?
(a) monoatomic cation (b) monoatomic anion
(c) polyatomic cation (d) polyatomic anion
(e) none of the above
35) What is the chemical formula for the oxide ion?
(a) O
-
(b) O
2-
(c) O2
-
(d) O2
2-
(e) none of the above
36) What is the chemical formula for the compound composed of Sr2+
and Brions?
(a) SrBr (b) Sr2Br
(c) SrBr2
(d) Sr2Br2
(e) none of the above
37) What is the IUPAC name for Hg2Cl2 ?
(a) mercury chloride (b) mercurous chloride
(c) mercuric chloride (d) mercury(I) chloride
(e) mercury(II) chloride
38) What is the chemical formula for magnesium chromate?
(a) MgCrO4
(b) Mg(CrO4
)2
(c) Mg2CrO4
(d) Mg2
(CrO4
)3
(e) Mg3
(CrO4
)2
39) What is the IUPAC name for Fe2
(SO4
)3?
(a) iron sulfate (b) ferrous sulfate
(c) ferric sulfite (d) iron(II) sulfate
(e) iron(III) sulfate
40) What is the IUPAC name for SF6?
(a) sulfur tetrafluoride (b) sulfur hexafluoride
(c) sulfur heptafluoride (d) sulfur octafluoride
(e) sulfur nonafluoride
41) What is the chemical formula for nitric acid?
(a) HNO2 (aq)
(b) HNO3 (aq)
(c) H2NO2 (aq)
(d) H2NO3 (aq)
(e) NH3 (aq)
42) What is the IUPAC name for aqueous HCN?
(a) hydrogen cyanide (b) hydrocyanic acid
(c) cyanous acid (d) cyanic acid
(e) percyanic acid
43) Which of the following formulas represents an element in its natural state?
(a) H2
(b) N2
(c) O2
(d) all of the above
(e) none of the above
please answer all questions
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