EF 18. Which equation correctly represents the electron affinity of calcium? A) Ca (g) + e...
Question Which equation correctly represents the electron affinity of potassium A. K (g) → K+ (g) +ę- B. K (g) → K-(g) + e- C. K- (g) → K (g) + e- D. K (g) + e- → K-(g) E. K+ (g) + e- →K (g) A. AO B. B C. C D. D E. EO Reset Selection
Which equation correctly represents electron capture by the Po nucleus? Select one: A. Po + e → At B. Po + β → At C. Po → At + β D. Po → Bi + β E. Po + e → Bi
10. Which one of the following correctly arranges electron affinity (EA) in increasing order from smallest to highest: A) Sr Rb <Sb <Sn<Te B) Rb Sr < Sn Sb <Te C) Rb Sr <Sb <Sn<Te D) Sr Rb <Sn Sb <Te E) Te <Sb <Sn<Sr <Rb 15. Which pair of ions exhibits the greatest attractive force between them A) Cape and on B) K and S2 C) K and CI D) Na and I E) Cat and I
An atom of which of the following elements has the highest electron affinity? Select one: a. Br b. Cl c. Rb d. As e. Se An atom of which of the following elements is not diamagnetic in the ground state? Select one: a. Rn b. Ca c. Pt d. Cd e. All are diamagnetic. The general electron configuration for the outermost electrons of the halogens is Select one: a. ns2np4 b. ns2np5 c. ns2np6 d. ns2np2 e. ns2np3 What...
12, 18 thank you - - _12) Numerical coefficients that correctly balance the reaction, Fe + H20 Fe3O4 + H2 are, A) 3,4, 1,4 B) 3, 1, 4,4 C) 3, 5, 2,4 D) 1.3, 4,4 13) The word equation "calcium reacts with chlorine to produce calcium chloride" would be represented by which of the following formula equations? (a) CaCl2 +CaCl2 (b) CaCl2 Ca+ Cl2 (c) CaCl2 +CaCl2 (d) Ca+ Cl2 -CaCl2 _14) Which of the following is a decomposition reaction?...
Q4. Level 1 (Unit 18, L.G. 1) Which of the following is the correct dissociation reaction for calcium hydroxide in water? A. CaOH → Cat + OH B. CaOH → Cat + O2- + H+ C. Ca(OH)2 → Ca2+ + 2OH- D. Ca(OH)2 → Ca2+ + 202- + 2H+ E. Ca(OH)2 → Ca2+ + (OH-)2
12. Which of the following correctly represents the second ionization of aluminum? A) Ait (g) + € → Al (9) B) AI (g) → Al* (g) + e C) Al-(g) + e + A1-(g) D) A1+ (g) + e* → A12+ (8) E) A1+ (g) → A12+ (g) + e*
Question 7 (1 point) Which equation correctly represents positron decay of K? 0 OK + c → Ca OOK CL • He O 18K ООО Ar • B AT OOK C
7. a) b) c) The ground-state electron configuration of a Crition is 15 2-2p 3s 3p 3d". Therefore, Cris diamagnetic. paramagnetic with one unpaired electron. paramagnetic with five unpaired electrons. paramagnetic with four unpaired electrons. paramagnetic with three unpaired electrons. d) 8. IV A section of the periodic table with all identification features removed is shown below. W Which element has the smallest atomic radius? W 9. a) b) c) d) The change in energy for which of the following...
4) Which element has the highest electronegativity? A) Ge B) O C) B D) Ca 5) Which element has the highest electron affinity? A) Ge В) 0 С) в D) Ca E)K 6) of the 3 elements fluorine, bromine, and calcium, has the highest ionization energy and _has the lowest ionization energy. (Note that we are considering the first ionization energy). A) bromine; calcium B) calcium; fluorine C) fluorine; bromine D) fluorine; calcium E) none of these 7) Based upon...