Question 31 : Which is the chemical formula for iron(III)sulfate?
1. Fe₂(SO₄)₃
2. Fe₃SO₄
3. Fe₂SO₄
4. Fe(SO₄)₃
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Question 32 : Which one of the following compounds is most likely to be an ionic compound?
1. KF
2. CS₂
3. CCl₄
4. CO₂
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Question 33 : The forces of attraction that exist between nonpolar molecules are called
1. ionic bonds
2. Van der Waals / dispersion forces
3. covalent bonds
4. electrovalent bonds
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Question 34 : Which of the elements listed below has the greatest electronegativity?
1. As
2. Ga
3. Na
4. Cs
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Question 35 : Which molecule is a polar molecule?
1. N₂
2. CO₂
3. CH₄
4. H₂O
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Question 36 : Which compound contains no ionic character?
1. K₂O
2. CaO
3. NH₄Cl
4. CO
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Question 37 : Which substance represents a molecule that can combine with a proton (H1+)?
1. HCl
2. NH₃
3. Na1+
4. H₃O₁⁺
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Question 38 : Which substance is a network solid?
1. CO₂
2. Li₂O
3. H₂O
4. SiO₂
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Question 39 : Which kinds of bonding can be found in a sample of H₂O(l)?
1. Nonpolar covalent bonds only
2. Hydrogen bonds only
3. Ionic and nonpolar hydrogen bonds
4. Both polar covalent and hydrogen bonds
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Question 40 : Which combination of atoms can form a polar covalent bond?
1. H and Br
2. N and N
3. H and H
4. Na and Br
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