1. [Chang7 8.P.021.] Group the following electron configurations in pairs that would represent similar chemical properties of their atoms.

Transcription

1 uestion Score 1. [Chang7 8.P.021.] Group the following electron configurations in pairs that would represent similar chemical properties of their atoms. (a) 1s 2 2s 2 2p 6 3s 2 (b) 1s 2 2s 2 2p 3 (c) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 (d) 1s 2 2s 2 (e) 1s 2 2s 2 2p 6 (f) 1s 2 2s 2 2p 6 3s 2 3p 3 (a) and (c), (b) and (f), (d) and (e) form groups (a) and (d), (b) and (c), (e) and (f) form groups (a) and (d), (b) and (f), (c) and (e) form groups (a) and (f), (b) and (d), (c) and (e) form groups

2 2. [Chang7 8.P.023.] Without referring to a periodic table, pick the electron configuration of elements with the following atomic numbers and classify the elements. (Type your answer in noble gas notation using the format [Ar] 4s2 3d10 4p2 for [Ar]4s 2 3d 10 4p 2.) (a) 17 classification halogen alkaline earth metal transition metal Group 2A (b) 20 classification halogen Group 5A alkaline earth metal transition metal (c) 23 classification alkaline earth metal halogen transition metal Group 3A (d) 83 classification Group 5A alkaline metal halogen Group 7A

3 3. [Chang7 8.P.027.] Write the ground state electron configurations of the following ions. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s 2 3d 10 4p 2. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -.) (a) Al 3+ (b) Li + (c) Cu 2+ (d) Sr 2+ (e) Rb + (f) Mn 2+ (g) Se 2- (h) Au + (i) Zn [Chang7 8.P.029.] Write the ground-state electron configurations of the following ions. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s 2 3d 10 4p 2. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -.) (a) Ti 4+ (b) Ag + (c) Fe 3+ (d) Cu + (e) Ni 2+ (f) Au + (g) Fe 2+ (h) Cr 3+ (i) Te 2-

4 5. [Chang7 8.P.031.] Which of the following species are isoelectronic with each other? (Select all that apply.) C and Ar B - and Fe 3+ Ar and Cl - Ar and Ge 2+ C and Ge 2+ C and Mn 2+ Zn and B - Zn and Cl - B - and Cl - C and B - Zn and Ge 2+ Mn 2+ and Fe [Chang7 8.P.043.] Indicate which one of the two species in each of the following pairs is smaller. (a) Cl - Cl (b) Na + Na (c) O 2- S 2- (d) Al 3+ Mg 2+ (e) Au 3+ Au +

5 7. [Chang7 8.P.047.] Give the physical states (gas, liquid, or solid) of the representative elements in the fourth period at 1 atm and 25 C. (a) K solid liquid gas (b) Ca solid liquid gas (c) Ga solid liquid gas (d) Ge solid liquid gas (e) As solid liquid gas (f) Se solid liquid gas (g) Br solid liquid gas

6 8. [Chang7 8.P.048.] The boiling points of neon and krypton are C and C, respectively. Using these data, estimate the boiling point of argon. C 9. [Chang7 8.P.059.] Arrange the elements in each of the following groups in increasing order of the most positive electron affinity. (a) Li, Na, K (b) F, Cl, Br, I < < < < < 10. [Chang7 8.P.073.] State whether each of the following properties of the representative elements generally or as one moves along the periodic table. (a) metallic character from left to right across a period from top to bottom within a group (b) atomic size from left to right across a period from top to bottom within a group

7 (c) ionization energy from left to right across a period from top to bottom within a group (d) acidity of oxides from left to right across a period from top to bottom within a group 11. [Chang7 8.P.081.] In which of the following are the species written in decreasing order by size of radius? Be, Mg, Ba N 3-, O 2-, F - Tl 3+, Tl 2+, Tl Match each of the elements on the right with its description on the left. (a) A pale yellow gas that reacts with water. (b) A soft metal that reacts with water to produce hydrogen. (c) A metalloid that is hard and has a high melting point. (d) A colorless, odorless gas. (e) A metal that is more reactive than iron, but does not corrode in air.

8 [Chang7 8.TB.008b.] Representative elements are in groups [Chang7 8.TB.008a.] Representative elements are also called [Chang7 8.TB.010b.] Which among the following is diatomic? phosphorus neon oxygen sodium [Chang7 8.TB.010d.] An element having an extensive three-dimensional structure is

9 [Chang7 8.TB.012c.] Six valence electrons are present in 1 2/ [Chang7 8.TB.016a.] Isoelectronic ions have electronic configuration [Chang7 8.TB.016g.] Which among the following is isoelectronic with Ti 4+? Kr Cl - Mg 2+ Ar

10 [Chang7 8.TB.021b.] Consider the following elements. A: 1s 2 2s 2 2p 6 3s 2 B: 1s 2 2s 2 2p 3 C: [Ar] 4s 2 3d 10 4p 6 D: 1s 2 2s 2 E: 1s 2 2s 2 2p 6 F: 1s 2 2s 2 2p 6 3s 2 3p 3 The element 'D' will be similar in properties to [Chang7 8.TB.021d.] Consider the following elements. A: 1s 2 2s 2 2p 6 3s 2 B: 1s 2 2s 2 2p 3 C: [Ar] 4s 2 3d 10 4p 6 D: 1s 2 2s 2 E: 1s 2 2s 2 2p 6 F: 1s 2 2s 2 2p 6 3s 2 3p 3 A noble gas among these is [Chang7 8.TB.022b.] Answer the following question on the basis of the data given below. A. 1s 2 2s 2 2p 5 B. 1s 2 2s 1 C. 1s 2 2s 2 2p 6 D. 1s 2 2s 2 2p 6 3s 2 3p 5 E. [Ar] 4s 1 F. [Ar] 4s 2 3d 10 4p 6 Element E is a/an

11 [Chang7 8.TB.037c.] The largest halogen atom among the following is [Chang7 8.TB.039.] The largest atom in group 4A is [Chang7 8.TB.040.] The smallest atom in group 7A is 1 3/ [Chang7 8.TB.043.] Which among the following is the correct order of the size of the atom or ion? Cl < Cl - Na + > Na O 2- < S 2- Mg 2+ < Al 3+

12 1 4/ [Chang7 8.TB.044.] Which among the following is the correct order of radius? F - < O 2- < Mg 2+ < Na + O 2- < F - < Na + < Mg 2+ Mg 2+ < Na + < F - < O 2- Mg 2+ > Na + > F - > O [Chang7 8.TB.064b.] Which among the following is an example of a basic oxide? BaO P 2 O 3 SO 3 P 2 O 5 1 4/ [Chang7 8.TB.067.] Which among the following has the highest ionization energy? Xe He Cs F

13 [Chang7 8.TB.069d.] Which oxide among the following is highly acidic? SO 3 CO CO 2 CaO 1 2/ [Chang7 8.TB.073a.] The property which from left to right in the period is 1 2/ [Chang7 8.TB.073b.] The property which along a group from top to bottom is 1 4/ [Chang7 8.TB.076b.] Which among the following is the correct order of ionization energy? O 2- < F - < Na + < Mg 2+ F - < O 2- < Na + < Mg 2+ O 2- > F - > Na + > Mg 2+ Na + < Mg 2+ < F - < O 2-

14 1 4/ [Chang7 8.TB.086b.] The most electronegative element is 1 3/ [Chang7 8.TB.086a.] The element which forms a compound with almost all elements is 1 2/ [Chang7 8.TB.088.] Which among the following is the biggest in size? proton H + H H -

15 [Chang7 8.TB.095.] The element having negative electron affinity is 1 2/ [Chang7 8.TB.100.] Which among the following will have the highest ionizaton energy? Mg + Cs Cl - Na + Submit all questions for grading Save all work Home My Assignments WebAssign tm by North Carolina State University. rights reserved.