Assignments

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
28	29 . What did the Plum pudding model suggest about the structure of atoms? 3 PM	30 Rutherford Gold foil experiment 11:59 PM An atom contains three elementary particles: electrons, neutrons, and protons. 3 PM	1 What is the name of this element? 3 PM	2 What element is represented in this Bohr Model? 3 PM	3 Bohr model project 11:59 PM What is a Bohr Model? 3 PM	4
5	6 What is the atomic number of this atom? 3 PM	7 bohr model 10:55 AM In borhs model, Orbitals are also known as 3 PM	8 An atom that is an isotope of potassium (K) must... 3 PM	9 What do these isotopes of carbon all have in common? 3 PM	10 isotopes doc 11:59 PM 12 protons and 13 neutrons 3 PM	11
12	13 Magnesium exists as the three isotopes shown. What is the average atomic mass of magnesium? 3 PM 1. What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have a mass of 179, and 35 have a mass of 180.0? 2. Iodine is 80% 127 I, 17% 126 I, and 3% 128 I. Calculate the average atomic mass of iodine. 3. Calculate the average atomic mass of gold with the 50% being gold-197 and 50% being gold-198. 4. Calculate the average atomic mass of lithium, which occurs as two isotopes that have the following atomic masses and abundances in nature: 6.017 u, 7.30% and 7.018 u, 92.70%. 10:55 AM	14 1. Calculate the average atomic mass of magnesium using the following data for three magnesium isotopes. Isotope mass (u) relative abundance Mg-24 23.985 78.70% Mg-25 24.986 10.13% Mg-26 25.983 11.17% 2. Calculate the average atomic mass of iridium using the following data for two iridium isotopes. Isotope mass (u) relative abundance Ir-191 191.0 37.58% Ir-193 193.0 62.42% 10:55 AM 24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu. What is the average mass of this element? 3 PM	15 An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu 3 PM	16 What quantities vary between isotopes of an element? 3 PM	17 unit test 10:55 AM	18
19	20	21	22 Isotopes lab 11:59 PM	23	24	25
26	27	28	29	30	31	1