a.8
b.9
c.10
d.20
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The atomic number of fluorine is 9. How many electrons does an ion of fluorine have if it is represented by the symbol sho
2. The atomic number of fluorine is 9. How many electrons does ion of fluorine have if it is represented by the symbol shown below? 1971: O A 8 electrons O B.9 electrons O C. 10 electrons O 0.20 electrons
#2 1. How many moles of electrons are represented by a total charge of 1.0 C? The charge on A) 6.2 x 10 mol B) 1.6 x 10-19 mol C) 3.5 x 105 mol D) 1.0 x 10 mol 2. The charge on an electron is 1.602 x 10"9 C. How many electrons flow when 55 pJ of an electron is 1.602 x 10-19 C. electrical energy passes through a voltage of 9 V? A) 3.4 x 10 B) 3.8...
1. How many electrons appear in the Lewis symbol for an element whose electron configuration is 1s'2s'2p? a. 2 b. d. 2. In which of the following ionic compounds are ions with a +2 charge present? a LiSe c Mg,Si d. SnO 3. The Roman numeral ." in the name iron(m) oxide indicates that: a. iron is present in the form of +3 ions b. there are three iron atoms per formula unit c. there are three oxygen atoms per...
The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below? 1. 7Li O A. 2 neutrons O B. 13 neutrons O C.4 neutrons O D.7 neutrons
Fluorines atomic number is 9 and its atomic mass is 19. How many neutrons does fluoride have?
How many d electrons are there in MnO4 ? ground state atomic number of Mn is 25 ground state atomic number of O is 8
TI(H20).Jis an octahedral complex. (9 pts) a. Name this complex. b. How many d electrons does it have? c. Sketch the d-orbital diagram for the complex. Label the energy levels tax and e) and each of the d-orbitals. d. Ais 3.99 x 10-19) (per photon). What is the value of A, in kJ/mol? e. Calculate the wavelength of light (nm) needed to excite an electron from the texto the eg orbital. 1 What color of the visible region of the...
Determine how many protons, neutrons, and electrons a given atom (or ion) has, given its symbol, atomic number, and mass number (and vice versa) . Describe the relative mass, charge, and location of the three basic particles in the atom (a, B, Y) 4. State what isotope serves as the current standard for the atomic mass scale. 5. Explain why atomic masses of some elements (i.e., Cu, CI) are so far from whole numbers. Bfo glqibnhq 1916 Summarize the contributions...
(1) 1 (2) 2 6. How many unpaired electrons does an atom of phosphorous have in its ground state? (3) 3 (4) 5 A possible set of quantum numbers for the last electron added to complete an atom of silicon (SI) in its ground state is A 4 0 0 +% B 3 0 +1 - C. 4 1 -1 +² D 3 1 +1 -2 (1) A (2) 8 (3)C (4) D 8. A possible set of quantum numbers...
9. The number of electrons produced by one cycle of Krebs is a 6 b. 8 c. 4 d. 2 10. A phosphorylase a is a kinase b. is a hydroxylase c. phosphorylates using phosphate d. phosphorylates using GTP 11. The nitrogen present in purine bases is donated by a. Glu c. Gly b. Gin d. Lys a 12. The ultimate product in the degradation of purine bases in humans is urea b. ammonia c. uric acid d. allantoin