Homework Answers
Given that the atomic number is 12
So the element is Mg ( magnesium)
It belongs to 2A group
So it forms Mg2+ ion
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211,21,211,2,411,2,31311, .- ,011,a,,31,31 1,21 011,2011,20,21, 2 2 ,2 211, :),211, 8 || $ 1 1,90 Hall,311,5,211,...
® 211,21,22,20,8 01 | |,-1,2 - 31, 1,21 -1,90 21,211,2,3,4 _all,811,5 eu, 21,34,51,F3,81 $,34,21,84 311 2,2...
® 211,21,22,20,8 01 | |,-1,2 - 31, 1,21 -1,90 21,211,2,3,4 _all,811,5 eu, 21,34,51,F3,81 $,34,21,84 311 2,2 2 M ,31,50 Which of the following is the correct rank of increasing electron affinities (from less exothermic to more exothermic)? Select the correct answer below: -------- >1,21, ,8 ,811, Cs <K< Na < Li < Cs < Li < Na Li < Na < K< CS Na < Li <K< Cs 3112 K O O O O
4 (a) Complete the table to show the number of electrons and number of neutrons (2)...
4 (a) Complete the table to show the number of electrons and number of neutrons (2) in the barium ion and oxygen atom. number of neutrons number of electrons 137 Baa* 56 81 be 10 8 8 *(b) Explain in terms of electrons, how a barium atom reacts with an oxygen atom [2] to form the barium ion and oxide ion. [Total: 4) 2.6 Кеу electrons of atom X electrons of atom Y Ryan drew a 'dot-and-cross' diagram to show...
Date: 2. Using the completed table above, in the following table, list in the appropriate columns...
Date: 2. Using the completed table above, in the following table, list in the appropriate columns the symbol and atomic number of the elements that have the following patterns of electrons in the outermost energy level of the atom: A: the END of the configuration is "s(ending in Is' or 2s or3sı , ctc.) B: ends in"f"; C: ends in "p' "; D: ends in "рг "; E: ends in "p""; F: ends in "p4 "; di: ends in "ps-,...
1.)Construct an MO diagram for the He+2 ion. a.Determine if the He+2 ion is stable or...
1.)Construct an MO diagram for the He+2 ion. a.Determine if the He+2 ion is stable or unstable? b.What is its bond order? 2.) select the correct electron configurations from the list below. You can refer to the periodic table for atomic numbers. The electron configuration of Cu+ is [Ar]4s13d9. The electron configuration of S2− is [Ne]3s23p6. The electron configuration of Fe is [Ar]4s23d6. The electron configuration of Si is [Ne]3s23p2. The electron configuration of Rb is [Kr]5s04d1.
PERIODIC TABLE REVIEW WORKSHEET 1. Match the man with his contribution to (A) Lothar Meyer with...
PERIODIC TABLE REVIEW WORKSHEET 1. Match the man with his contribution to (A) Lothar Meyer with his contribution to the Periodic Table: Doberiner (A) groups of 3.elements, called triads (C) Dmitri Mendelevey (8) graphed atomic weight Vs atomic volune.meyer nendeleyev (c) properties repost every oth element-Newlanas (C) proper (E) Henry Moseley (D) used X-rays to define "atomic numbers'-moseley (E) "periodic law" based on atomic weights-menckeleen 2. Identify an A periodic tables (A) period (D) transition metal (G) inert gas (Group...
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a....
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a. Write the ground-state electron configuration for 2, showing only the valence-shell electrons. b. Would Z be a metal or a nonmetal? Explain in terms of electron configuration. c. On the basis of periodic trends, would Z have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. d. What would be the most likely charge...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
1. (2 pts) Given the name or symbol for an element and its mass#, Fill in...
1. (2 pts) Given the name or symbol for an element and its mass#, Fill in the table: Element # protons # neutrons # electrons 87Rb+ 128Te-2 2. (3 pts) Write the correct symbol and charge for the following: An atom with 47 protons, mass number 107, and 46 electrons. An atom with 2 more electrons than protons, mass number 80, and 46 neutrons. Write the atomic symbol for the element whose ion has a 2- charge, has 20 more...
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date...
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date a F b. Ne d. Ar e. He 2. Which alkali metal is expected to have the smallest ionization energy? c. CI a. Li b. Na d. Cs e. Fr 3. Which of the following would be expected to have the smallest atomic size? c. Rb a. K c. Rb d. Sr e. Cs 4. Which of the following would be expected to have...
7. Which element has the following electron configurations? lon: [Ar]3d10 lon (-1 charge): [Kr]5s4d105p6 8. Write t...
7. Which element has the following electron configurations? lon: [Ar]3d10 lon (-1 charge): [Kr]5s4d105p6 8. Write the following in order of increasing size As O Br Br Na Rb Te²- F- 02- 9. Arrange these elements in order of decreasing first ionization energy: CI, S, Sn, Pb 10. Choose the element with a more negative (exothermic) electron affinity in each pair: K or Cs Si or P Ga or Br Mg or s 11. a) Which has a higher ionization...
® 211,21,22,20,8 01 | |,-1,2 - 31, 1,21 -1,90 21,211,2,3,4 _all,811,5 eu, 21,34,51,F3,81 $,34,21,84 311 2,2 2 M ,31,50 Which of the following is the correct rank of increasing electron affinities (from less exothermic to more exothermic)? Select the correct answer below: -------- >1,21, ,8 ,811, Cs <K< Na < Li < Cs < Li < Na Li < Na < K< CS Na < Li <K< Cs 3112 K O O O O
4 (a) Complete the table to show the number of electrons and number of neutrons (2) in the barium ion and oxygen atom. number of neutrons number of electrons 137 Baa* 56 81 be 10 8 8 *(b) Explain in terms of electrons, how a barium atom reacts with an oxygen atom [2] to form the barium ion and oxide ion. [Total: 4) 2.6 Кеу electrons of atom X electrons of atom Y Ryan drew a 'dot-and-cross' diagram to show...
Date: 2. Using the completed table above, in the following table, list in the appropriate columns the symbol and atomic number of the elements that have the following patterns of electrons in the outermost energy level of the atom: A: the END of the configuration is "s(ending in Is' or 2s or3sı , ctc.) B: ends in"f"; C: ends in "p' "; D: ends in "рг "; E: ends in "p""; F: ends in "p4 "; di: ends in "ps-,...
PERIODIC TABLE REVIEW WORKSHEET 1. Match the man with his contribution to (A) Lothar Meyer with his contribution to the Periodic Table: Doberiner (A) groups of 3.elements, called triads (C) Dmitri Mendelevey (8) graphed atomic weight Vs atomic volune.meyer nendeleyev (c) properties repost every oth element-Newlanas (C) proper (E) Henry Moseley (D) used X-rays to define "atomic numbers'-moseley (E) "periodic law" based on atomic weights-menckeleen 2. Identify an A periodic tables (A) period (D) transition metal (G) inert gas (Group...
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a. Write the ground-state electron configuration for 2, showing only the valence-shell electrons. b. Would Z be a metal or a nonmetal? Explain in terms of electron configuration. c. On the basis of periodic trends, would Z have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. d. What would be the most likely charge...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date a F b. Ne d. Ar e. He 2. Which alkali metal is expected to have the smallest ionization energy? c. CI a. Li b. Na d. Cs e. Fr 3. Which of the following would be expected to have the smallest atomic size? c. Rb a. K c. Rb d. Sr e. Cs 4. Which of the following would be expected to have...
7. Which element has the following electron configurations? lon: [Ar]3d10 lon (-1 charge): [Kr]5s4d105p6 8. Write the following in order of increasing size As O Br Br Na Rb Te²- F- 02- 9. Arrange these elements in order of decreasing first ionization energy: CI, S, Sn, Pb 10. Choose the element with a more negative (exothermic) electron affinity in each pair: K or Cs Si or P Ga or Br Mg or s 11. a) Which has a higher ionization...
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