Answer:
a. 5 protons and 5 neutrons
b. 11 protons and 13 neutrons
c. 27 protons and 32 neutrons
d. 82 protons and 126 neutrons
e. 92 protons and 143 neutrons
Step-by-step explanation:
Using isotope notation:
ˣN
X = Amount of neutrons and protons
N is the atom. If N is nitrogen, the atomic number is 7, that means there are 7 protons.
X - Amount of protons = Neutrons
a. ¹⁰B. Atomic number = 5 = Number of protons
10 - 5 = 5 = Number of neutrons
5 protons and 5 neutrons
b. ²⁴N. Atomic number = 11 = Number of protons
24 - 11 = 13 = Number of neutrons
11 protons and 13 neutrons
c. ⁵⁹Co. Atomic number = 27 = Number of protons
59 - 27 = 32 = Number of neutrons
27 protons and 32 neutrons
d. ²⁰⁸Pb. Atomic number = 82 = Number of protons
208 - 82 = 126 = Number of neutrons
82 protons and 126 neutrons
e. ²³⁵U. Atomic number = 92 = Number of protons
235 - 92 = 143 = Number of neutrons
92 protons and 143 neutrons