Question

Give the number of protons, electrons, and neutrons in each of the following: a. ^10 5 B b. ^199 80 Hg c. ^63 29 Cu d. ^77 34 Se Write the symbol for each of the following ions: a. the ion with 3+charge, 28 electrons, and a mass number of 71 b. the ion with 36 electrons, 35 protons, and 45 neutrons c. the ion with 86 electrons, 142 neutrons, and a 4 + charge d. the ion with a 2 + charge, atomic number 38, and mass number 87 Determine the empirical formula. a. Acetic acid, C_2H_4Q_2 b. Citric acid, C_6H_8O_7 c. Hydrazine, N_2H_4 d. Nicotine, C_10 H_14 N_2 e. Butane, c_4 H_10 What is the difference between atomic mass, mass number, and average mass?

Answer 1

16)

a)

number of ptoton is number at bottom which is 5

SO,

number of proton = 5

Since number of proton = number of electron,

number of electron = 5

number of neutron = mass number - number of proton = 10 - 5 = 5

b)

number of proton = 80

number of electron = 80

number of neutron = 199 - 80 = 119

c)

number of proton = 29

number of electron = 29

number of neutron = 63 - 29 = 34

d)

number of proton = 34

number of electron = 34

number of neutron = 77 - 34 = 43

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