CHEM 123 Study Guide - Quiz Guide: Caesium, Electron Affinity, Bromine
48
CHEM 123 Full Course Notes
Verified Note
48 documents
Document Summary
Chemistry 121 section 199 practice quiz #1 time: 15 min. Please put the first letter of your family/last name in this box. This quiz is out of 15 marks and is printed on both sides of the page. In a real quiz i will provide a periodic table identical to one on inside cover of your textbook. For maximum usefulness, do this practice quiz in 15 min without looking at anything other than a periodic table: consider the reaction of cesium with water as demonstrated in class. Final answer: ____________ (b) what is the mass of the other isotope, bromine-81? (3 pts) (3) bromine has two naturally occurring isotopes. One of them, bromine-79, has a mass of. 78. 918336u and a natural abundance of 50. 69%. (4) match the lettered items in the column on the right with the most appropriate numbered items on the left.
