Sodium has an electron affinity of-52.9 kJ/mol, while the electron affinity of magnesium is +40 kJ/mol. 4. a) Which...
4. Which of the following elements would have a larger electron affinity? Explain why. a. C vs. N b. Ar vs. Kr
Which has the larger ionization energy? Sodium (Na), or potassium (K). Why? Which has the larger radius? Sulfur (S), or the sulfide anion (S2-). Why? If an element has a "large negative" electron affinity number where would it be located on the periodic table?
The electron affinity of fluorine is -328 kJ mol-1. Which of the reactions shown below has a reaction energy of +328 kJ mol-1? A) F+(g) + e- ---> F(g) B) F(g) + e- ---> F-(g) C) F-(g) + e- ---> F2-(g) D) F-(g) ---> F(g)+ e- E) F(g) ---> F+(g)+ e- F) F+(g) ---> F2+(g)+ e-
3. The enthalpy of solution for sodium chloride is +4 kJ/mol while that of silver chloride is +65 kJ/mol. (a) Based on the enthalpies of solution and assuming that the change in entropy for the solution process is the same for each compound, which compound do you expect to be more soluble? Why? (b) Using enthalpy of hydration data from the appendix, calculate values for the two lattice enthalpies. (c) Estimate values for the lattice energies using the Born-Landé equation...
need explanation not just answer Question 5 Each of the following elements has a positive electron affinity. In each case, construct its valence orbital energy diagram and use it to explain why the anion is unstable. a) N b) Mg c) Zn
(a)Write the equation representing the 3rd ionization energy for Cu? (b)The electron affinity of B is 27 kJ/mol. Write the equation for which this is the energy change.
answers given but please show work on how you get to that answer. 16. Which one of the following statements about valence electron c Tollowing statements about valence electron configurations is incorrect? A) A single neutral phosphorus atom, P, has 5 valence electrons. B) A single neutral carbon atom, C, has 2 unpaired valence electrons. (C) A single neutral sulfur atom, S, has 2 valence electrons. D) A single neutral nitrogen atom, N, has 3 unpaired valence electrons. E) A...
In questions 2-4, you may use radius comparisons as given information. IONIZATION ENERGY. Ionization energy refers to energy required to remove an outer electron from an isolated atom. The energy tends to be less for elements with weaker attractions to the nucleus or higher initial energy levels. The general trend is for lower energy for elements lower in columns and higher energy from left to right across rows of the periodic table. There are some notable exceptions. Explain why: 2....
6.) Explain with as much detail possible why when bonding, fluorine will have a greater pull on bonding electrons compared to iodine. U 7.) Explain with as much detail possible why sodium has a larger atomic radius than magnesium, 8.) Explain with as much detail possible why phosphorus has a larger atomic radius than nitrogen. 9.) Elements are very chemically reactive in groups 1 and 7. Use the trends to explain this observation. 10.) Below are the first thru third...
20. An atom of which of the following elements has the smallest ionization energy? A. CI C. Si B. P DS 21. An atom of which of the following elements has the largest second ionization energy? A. Cs С Ро B. Pb D. Ba Q89. 22. Which of the following forms the most stable anion in the gas phase? A. CI (electron affinity -349 kJ/mol) B. S (electron affinity = -200 kJ/mol) CO (electron affinity = -141 kJ/mol) D. C(electron...