Homework Answers
Answer:
1s22s22p6: Mg2+(1)
3s23p4 : S(3)
1s22s22p63s23p64s23d104p5: Br(2)
2s22p4: No answer
Mg2+ has a noble gas configuration of that of Ne. Hence, the first configuration is of Mg2+
The second configuration is that of group 16 and as the configuration signifies that it is a third period element, the configuration is that of sulphur(S)
The third configuration is that of a halogen and as the configuration signifies that it is a fourth period element, the configuration is that of Bromine(Br)
The fourth configuration is that of oxygen which is not given in the options. Hence, this will have no answer
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Match the following: 1s2 252 2p6 _11_ _11__1__1_ 1. Mg2+ 3s Зр 2. Br 1s2 2s2...
Match the predicted ground state electron configuration with the following elements: a. oxygen b. cesium c....
Match the predicted ground state electron configuration with the following elements: a. oxygen b. cesium c. lithium e. d. phosphorus gallium f. lanthanum 6. 1s 2s 2p 3s2 3p6 4s2 3d10 4p6 582 4d10 5p6 652 44 7. 1s2 2s2 2p 3s2 3p™ 452 3dłº 4p1 8. 1s2 2s 2p4 9. 1s 2s 2p™ 352 3p™ 452 3d10 4p6 552 4d10 5p 6s! 10. 1s 2s 2p6 3s 3p3
Q2: b) Three elements have the electron configurations: 1s' 2s2 2p 3s 3p 1s2 2s2 2p6...
Q2: b) Three elements have the electron configurations: 1s' 2s2 2p 3s 3p 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s 3p 4s. The first ionization energies of these elements (not in the same order) are: 0.419, 0.735, 1.527 MI/mol (MJ for mega Jouls). The atomic radii are 1.60 A°, 0.98 A°, 2.35 A°. Identify the three elements and match the appropriate values of ionization energy and atomic radius to each configuration Element Atomic Radius lonization Energy 1. 2. 3.
Problem Three atoms have the following electron configurations: (a) 1s2 252 2p6 3s2 3p1 (b) 1s2...
Problem Three atoms have the following electron configurations: (a) 1s2 252 2p6 3s2 3p1 (b) 1s2 252 2p6 3s2 3p5 (c) 1s2 252 2p6 352 3p6 4s1 Which of the three will have the largest IE1 ? Which will have the smallest 14 ?
1. Which element has the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2...
1. Which element has the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5 ? a. Br b. Mn c. Nb d. Tc 2. What is the value of 27oC on the Fahrenheit scale? Group of answer choices a. -6.8 b. 106 c. 300 d. 81 e. none of these 3. Which of the following atoms has the largest radius? Group of answer choices a. S b. Se c. Br d. O
A calcium atom (Ca) with Z-20 has the following electronic configurations: Ca: 1s2 2s2 2p6 3s2...
A calcium atom (Ca) with Z-20 has the following electronic configurations: Ca: 1s2 2s2 2p6 3s2 3p6 4s2 Ca*: 1s2 2s2 2p6 3s2 3p6 4s1 3d Determine the term symbols arising from the above configurations indicating the values of L, S and J. (10 marks)
The element 12Mg24 has 1s2 2s2 2p6 3s2 electronic configuration. The easiest method for Mg to...
The element 12Mg24 has 1s2 2s2 2p6 3s2 electronic configuration. The easiest method for Mg to reach an octet is by 1. loosing the two electrons in 3s2 level to reach 2s2 2p6 valence electronic configuration 2. gaining 6 electrons to 3p level to reach 3p6configuration. With this acquisition the Mg will have a 3s2 and 3p6 valence shell configuration 3. Share 6 electrons with 6 F atoms 4. None of the above
1.A U-238 atom (uranium-238) has a nucleus with 92 protons and an atomic mass of 238.0507882...
1.A U-238 atom (uranium-238) has a nucleus with 92 protons and an atomic mass of 238.0507882 u. What is the nuclear binding energy per nucleon in this atom? Group of answer choices 1.93 MeV 7.57 MeV 12.3 MeV 19.6 MeV 1802 MeV 2.What is the DeBroglie wavelength of an antineutrino with a kinetic energy of 1.8 MeV? Take the mass of the antineutrino to be 4.99E-37 kg. Group of answer choices 1.75 nm 2.88E-4 nm 5.36E-16 nm 8.45E-12 nm 3.Which...
1) **The electron configurations of five different elements are shown below. Which of these elements is...
1) **The electron configurations of five different elements are shown below. Which of these elements is expected to have the largest second ionization energy (IE2)?** (a) 1s 2s 2p 3s1 (b) 152 2s22p6352 (c) 152 282 2p 3s 3p1 (d) 152 252 2p6 352 3p4 (e) 1s 2s 2p 3s 3p5 2) **A single Lewis Structure of the formate ion (HCO2) is shown below. Which statement best describes the bonding character of this ion?** H-C-0: 10: (a) One double bond...
Consider the initial value problem Let L[y(t)] = Y(3), then Y(s) equals Select one: 2s +2...
Consider the initial value problem Let L[y(t)] = Y(3), then Y(s) equals Select one: 2s +2 a. O b. 3s +1 s(232 + s +3) 2s2 + s +1 OC s(2s2 + 8 +3) O d. 2s +1-2/3 252 +8 e. 28 +1 -4/5 28² +8
What is the ground-state electron configuration of the Al^3+ ion? a. 1s^2 2s^2 2p^6 3s^2 3p^4...
What is the ground-state electron configuration of the Al^3+ ion? a. 1s^2 2s^2 2p^6 3s^2 3p^4 b. 1s^2 2s^2 2p^6 3s^2 3p^1 c. 1s^2 2s^2 2p^3 d. 1s^2 2s^2 2p^1 e. 1s^2 2s^2 2p^6 Which of the following is the correct noble gas electron configuration for an ion of barium? a. [Kr]5s^2 4d^10 5p^6 6s^2 b. [Kr]5s^2 5p^6 c. [Kr]5s^2 4d^10 5p^6 6s^1 d. [Kr]5s^2 4d^10 5p^6 e. [Kr]5s^2 4d^10 5p^6 6s^2 6p^2 How many orbitals are possible when l...
Match the predicted ground state electron configuration with the following elements: a. oxygen b. cesium c. lithium e. d. phosphorus gallium f. lanthanum 6. 1s 2s 2p 3s2 3p6 4s2 3d10 4p6 582 4d10 5p6 652 44 7. 1s2 2s2 2p 3s2 3p™ 452 3dłº 4p1 8. 1s2 2s 2p4 9. 1s 2s 2p™ 352 3p™ 452 3d10 4p6 552 4d10 5p 6s! 10. 1s 2s 2p6 3s 3p3
Q2: b) Three elements have the electron configurations: 1s' 2s2 2p 3s 3p 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s 3p 4s. The first ionization energies of these elements (not in the same order) are: 0.419, 0.735, 1.527 MI/mol (MJ for mega Jouls). The atomic radii are 1.60 A°, 0.98 A°, 2.35 A°. Identify the three elements and match the appropriate values of ionization energy and atomic radius to each configuration Element Atomic Radius lonization Energy 1. 2. 3.
Problem Three atoms have the following electron configurations: (a) 1s2 252 2p6 3s2 3p1 (b) 1s2 252 2p6 3s2 3p5 (c) 1s2 252 2p6 352 3p6 4s1 Which of the three will have the largest IE1 ? Which will have the smallest 14 ?
A calcium atom (Ca) with Z-20 has the following electronic configurations: Ca: 1s2 2s2 2p6 3s2 3p6 4s2 Ca*: 1s2 2s2 2p6 3s2 3p6 4s1 3d Determine the term symbols arising from the above configurations indicating the values of L, S and J. (10 marks)
1) **The electron configurations of five different elements are shown below. Which of these elements is expected to have the largest second ionization energy (IE2)?** (a) 1s 2s 2p 3s1 (b) 152 2s22p6352 (c) 152 282 2p 3s 3p1 (d) 152 252 2p6 352 3p4 (e) 1s 2s 2p 3s 3p5 2) **A single Lewis Structure of the formate ion (HCO2) is shown below. Which statement best describes the bonding character of this ion?** H-C-0: 10: (a) One double bond...
Consider the initial value problem Let L[y(t)] = Y(3), then Y(s) equals Select one: 2s +2 a. O b. 3s +1 s(232 + s +3) 2s2 + s +1 OC s(2s2 + 8 +3) O d. 2s +1-2/3 252 +8 e. 28 +1 -4/5 28² +8
What is the ground-state electron configuration of the Al^3+ ion? a. 1s^2 2s^2 2p^6 3s^2 3p^4 b. 1s^2 2s^2 2p^6 3s^2 3p^1 c. 1s^2 2s^2 2p^3 d. 1s^2 2s^2 2p^1 e. 1s^2 2s^2 2p^6 Which of the following is the correct noble gas electron configuration for an ion of barium? a. [Kr]5s^2 4d^10 5p^6 6s^2 b. [Kr]5s^2 5p^6 c. [Kr]5s^2 4d^10 5p^6 6s^1 d. [Kr]5s^2 4d^10 5p^6 e. [Kr]5s^2 4d^10 5p^6 6s^2 6p^2 How many orbitals are possible when l...
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