Question

for questions 58-65 --- fill in the shaded blanks for the elements in this chart using the choices provided to you below. assume all elements are neutral. some choices may not be used. if a choice is made up of 2 letters bubble in both letters on your answer sheet. a. 28 b. 76 c. 14 d. 40 ab. 59 ac. 18 ad. 128 bc. 51 bd. 82 cd. 5 \

$$\begin{tabular}{|c|c|c|c|c|c|} \\hline element & number of protons & number of neutrons & number of electrons & atomic mass & atomic number \\\\ \\hline silicon & 14 & 58. \\textbf{shaded} & & 28 & \\\\ \\hline boron & 59. \\textbf{shaded} & & 5 & & \\\\ \\hline tellurium & & 76 & & 60. \\textbf{shaded} & 52 \\\\ \\hline nickel & & & 61. \\textbf{shaded} & 59 & 28 \\\\ \\hline lead & 82 & 125 & & & 62. \\textbf{shaded} \\\\ \\hline osmium & 76 & & 63. \\textbf{shaded} & 190 & \\\\ \\hline argon & 18 & 22 & & 64. \\textbf{shaded} & \\\\ \\hline zirconium & & 65. \\textbf{shaded} & & 91 & 40 \\\\ \\hline \\end{tabular}$$

for questions 66-68, use the bohr model diagram below. bohr model diagram: nucleus with 9 p, 10 n, electron shells; and four element boxes: h, f, ne, k 66. how many protons are in the atom above? a. 9 b. 10 c. 18 d. 19 67. what is the mass number of the atom above? a. 9 b. 10 c. 18 d. 19 68. using the information in the bohr model above and the pictures above, this is a(n) \\_____ atom. a. hydrogen b. fluorine c. neon d. potassium

Explanation:

Question 66

In the Bohr model diagram, the number of protons is represented by the number labeled as "P" (protons). Here, it shows 9 P, so the number of protons is 9.

The mass number of an atom is the sum of the number of protons and neutrons. From the diagram, protons (P) = 9 and neutrons (N) = 10. So mass number = 9 + 10 = 19.

The atom has 9 protons (atomic number 9). Looking at the given elements, Fluorine (F) has an atomic number of 9 (from the box: 9 F). Hydrogen has atomic number 1, Neon 10, Potassium 19. So it's Fluorine.

Answer:

a. 9

Question 67