Q&A Hero

Q: The element in period 4 with the smallest first ionization energy is ________.

Q: The ionic radius of Cs+ is ________ than the atomic radius of Cs, and the ionic radius of I- is ________ than the atomic radius of I.

Q: Using shorthand notation, the ground-state electron configuration for C4- is predicted to be ________.

Q: Using shorthand notation, the ground-state electron configuration for Sr2+ is predicted to be ________.

Q: The bonding in MgO is ________, whereas the bonding in CO is ________.

Q: The solid compound, Na2CO3, contains A) Na+, C4+, and O2- ions. B) Na+ ions and CO32-ions. C) Na2+ and CO32- ions. D) Na2CO3 molecules.

Q: Which ionic compound would be expected to have the highest lattice energy? A) Rb2O B) SrO C) In2O3 D) CO2

Q: Which of the following ionic compounds would be expected to have the highest lattice energy? A) LiF B) LiCl C) LiBr D) LiI

Q: An element that has the valence electron configuration 6s26p6 belongs to which period and group? A) period 6; group 6A B) period 6; group 8A C) period 7; group 6A D) period 7; group 8A

Q: How many valence shell electrons does an atom of indium have? A) 1 B) 2 C) 3 D) 49

Q: Which of the following elements has the least tendency to form an ion? A) Ca B) K C) Kr D) Se

Q: Which element has the highest (most negative) electron affinity? A) Na B) Mg C) O D) Ne

Q: Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium?A) [Kr]5s15p1 -> [Kr]5s1 + e-B) [Kr]5s2 -> [Kr]5s15p1C) [Kr]5s2 -> [Kr]5s1 + e-D) [Kr]5s2 + e- -> [Kr]5s25p1

Q: Which ionization process requires the most energy?A) O(g) -> O+(g) + e-B) O+(g) -> O2+(g) + e-C) F(g) -> F+(g) + e-D) F+(g) -> F2+(g) + e-

Q: Which ionization process requires the most energy?A) W(g) -> W+(g) + e-B) W+(g) -> W2+(g) + e-C) W2+(g) -> W3+(g) + e-D) W3+(g) -> W4+(g) + e-

Q: Of the following, which element has the highest first ionization energy? A) Sr B) Br C) K D) Te

Q: Of the following, which element has the highest first ionization energy? A) Sr B) Rb C) Na D) Ca

Q: Of the following, which element has the highest first ionization energy? A) Al B) Cl C) Na D) P

Q: Of the following, which element has the highest first ionization energy? A) beryllium B) boron C) carbon D) lithium

Q: Which of thes ions is the smallest? A) B) C) D)

Q: Which of these ions is the largest? A) B) C) D)

Q: Which of these ions is the largest? A) B) C) D)

Q: What is the identity of element Q if the ion Q2+ contains 10 electrons? A) C B) O C) Ne D) Mg

Q: Which ion does not have a noble gas configuration in its ground state? A) Sc3+ B) Al3+ C) Ga3+ D) As3-

Q: In which of the following sets do all species have the same number of protons? A) F-, Ne, Mg2+ B) Ge, Se2-, Br- C) K+, Rb+, Cs+ D) Br, Br-, Br+

Q: In which of the following sets do all species have the same number of electrons? A) F-, Ne, Mg2+ B) Ge, Se2-, Br- C) K+, Rb+, Cs+ D) Br, Br-, Br+

Q: How many electrons are in the ion, P3-? A) 12 B) 18 C) 28 D) 34

Q: How many electrons are in the ion, Cu2+? A) 27 B) 29 C) 31 D) 64

Q: How many electrons are in the outermost shell of the Ga3+ ion in its ground state? A) 2 B) 3 C) 6 D) 18

Q: Which of the compounds CH4, SrCl2, Cr(NO3)3, XeF2 are expected to exist as molecules? A) only CH4 B) CH4 and XeF2 C) CH4, Cr(NO3)2, and XeF2 D) SrCl2 and Cr(NO3)2

Q: Which of the compounds, Li3N, NH3, C3H8, IF3 are ionic compounds? A) only C3H8 B) only Li3N C) Li3N and NH3 D) NH3, C3H8, and IF3

Q: In which set do all elements tend to form anions in binary ionic compounds? A) C, S, Pb B) K, Fe, Br C) Li, Na, K D) N, O, I

Q: What type of bonding is found in the compound OF2? A) covalent bonding B) hydrogen bonding C) ionic bonding D) metallic bonding

Q: Which one of the following compounds contains ionic bonds? A) SrO B) HBr C) PBr3 D) SiO2

Q: Which of the following is the correct chemical formula for a molecule of astatine? A) At B) At- C) At+ D) At2

Q: What is the name for the group of elements indicated by the shaded portion of the periodic table?A) alkaline earth metalsB) group 3A elementsC) halogensD) noble gases

Q: What is the name for the group of elements indicated by the shaded portion of the periodic table? A) alkaline earth metals B) group 3A elements C) halogens D) noble gases

Q: What is the name for the group of elements indicated by the shaded portion of the periodic table? A) alkali metals B) alkaline earth metals C) inner-transition metals D) transition metals

Q: What is the name for the group of elements indicated by the shaded portion of the periodic table? A) alkali metals B) alkaline earth metals C) inner-transition metals D) transition metals

Q: Which salt has the lowest lattice energy? A) picture (a) B) picture (b) C) picture (c) D) picture (d)

Q: The following pictures represent alkali halide salts.Which salt has the highest lattice energy?A) picture (a)B) picture (b)C) picture (c)D) picture (d)

Q: What is the likely formula for the binary compound formed from the elements represented by letters B and C on the periodic table above?A) BCB) B3CC) BC3D) B2C3

Q: What is the likely formula for the binary compound formed from the elements represented by letters B and D on the periodic table above? A) BD B) B3D C) BD3 D) B2D3

Q: What is the likely formula for the binary compound formed from the elements represented by letters A and D on the periodic table above? A) AD B) A2D C) AD2 D) A2D3

Q: What is the likely formula for the binary compound formed from the elements represented by letters A and C on the periodic table above?A) ACB) A2CC) AC2D) A2C3

Q: Atoms of which element, indicated by letter on the periodic table, would be expected to have the most negative value of Eea?A) AB) BC) CD) D

Q: Atoms of which element, indicated by letter on the periodic table above, would be expected to have the lowest second ionization energy, Ei2? A) A B) B C) C D) D

Q: Atoms of which element, indicated by letter on the periodic table above, would be expected to have the highest second ionization energy, Ei2?A) AB) BC) CD) D

Q: Atoms of which element, indicated by letter on the periodic table above, would be expected to have the highest first ionization energy, Ei1?A) AB) BC) CD) D

Q: Atoms of which element, indicated by letter on the periodic table above, would be expected to have the smallest first ionization energy, Ei1?A) AB) BC) CD) D

Q: Which sphere most likely represents the S2- ion?A) AB) BC) A or BD) C or D

Q: Which sphere most likely represents the Cl⁻ ion? A) A B) B C) A or B D) C or D

Q: Which sphere most likely represents the Ca2+ ion? A) A B) B C) A or B D) C or D

Q: The four spheres below represent K+, Ca2+, Cl-, and S2-, not necessarily in that order.Which sphere most likely represents the K+ ion?A) AB) BC) A or BD) C or D

Q: Which sphere most likely represents the O2- ion?A) AB) BC) CD) D

Q: Which sphere most likely represents the F- ion? A) A B) B C) C D) D

Q: Which sphere most likely represents the Mg2+ ion? A) A B) B C) C D) D

Q: The four spheres below represent Na+, Mg2+, F-, and O2-, not necessarily in that order.Which sphere most likely represents the Na+ ion?A) AB) BC) CD) D

Q: The following four spheres represent an Mg atom, an Mg2+ ion, a S atom, and a S2- ion, not necessarily in that order. Use your knowledge about the relative sizes of atoms, cations, and anions to determine which of the following sets of reactions is most consistent with the sizes of the atoms and ions shown below.A) A -> B + 2e- and C -> D + 2e-B) A -> B + 2e- and D -> C + 2e-C) B -> A + 2e- and C -> D + 2e-D) B -> A + 2e- and D -> C + 2e-

Q: The following four spheres represent a Na atom, a Na+ ion, a Cl atom, and a Cl- ion, not necessarily in that order. Use your knowledge about the relative sizes of atoms, cations, and anions to determine which of the following sets of reactions is most consistent with the sizes of the atoms and ions shown below.A) A -> B + e- and C -> D + e-B) A -> B + e- and D -> C + e-C) B -> A + e- and C -> D + e-D) B -> A + e- and D -> C + e-

Q: In the reaction shown, which sphere most likely represents the monatomic cation? A) A B) B C) C D) D

Q: In the reaction shown, which sphere most likely represents the monatomic anion? A) A B) B C) C D) D

Q: In the reaction shown, which sphere most likely represents the nonmetal atom? A) A B) B C) C D) D

Q: The following four spheres represent a metal atom, a nonmetal atom, a monatomic anion and a monatomic cation, not necessarily in that order.In the reaction shown, which sphere most likely represents the metal atom?A) AB) BC) CD) D

Q: Atoms of which element, indicated by letter on the periodic table, is expected to have the smallest atomic radius?A) AB) BC) CD) D

Q: Atoms of which element, indicated by letter on the periodic table, are expected to have the largest atomic radius?A) AB) BC) CD) D

Q: Which element, indicated by letter on the periodic table above, has a 3+ ion with the electron configuration A) AB) BC) CD) D

Q: Which element, indicated by letter on the periodic table above, has a 3+ ion with the electron configuration [Kr]4d5? A) A B) B C) C D) D

Q: Which element, indicated by letter on the periodic table above, has a 1+ ion with the electron configuration A) A B) B C) C D) D

Q: Which element, indicated by letter on the periodic table above, has a 2+ ion with the electron configuration [Ar]3d10?A) AB) BC) CD) D

Q: Which drawing represents the ionic compound NH4ClO4?A) drawing (a)B) drawing (b)C) drawing (c)D) drawing (d)

Q: Which drawing represents the ionic compound KNO3? A) drawing (a) B) drawing (b) C) drawing (c) D) drawing (d)

Q: Which drawing represents the ionic compound CaCl2? A) drawing (a) B) drawing (b) C) drawing (c) D) drawing (d)

Q: Which drawing represents the ionic compound Na2CO3? A) drawing (a) B) drawing (b) C) drawing (c) D) drawing (d)

Q: In the following drawings, shaded spheres represent cations and unshaded spheres represent anions.Which drawing represents the ionic compound Mg3(PO4)2?A) drawing (a)B) drawing (b)C) drawing (c)D) drawing (d)

Q: Which picture corresponds to potassium fluoride?A) picture (a)B) picture (b)C) picture (c)D) picture (d)

Q: Which picture corresponds to iodine? A) picture (a) B) picture (b) C) picture (c) D) picture (d)

Q: Which picture corresponds to fluorine? A) picture (a) B) picture (b) C) picture (c) D) picture (d)

Q: Each of the pictures (a)-(d) represents one of the following substances at 25C: potassium, fluorine, iodine, potassium fluoride, not necessarily in that order.Which picture corresponds to potassium?A) picture (a)B) picture (b)C) picture (c)D) picture (d)

Q: Which of the above pictures are more likely to represent covalent compounds?A) pictures (a) and (b)B) pictures (a) and (d)C) pictures (b) and (c)D) pictures (b) and (d)