Chem 120A General, Organic, and Biological Chemistry Exam#2 Updated

Which of the following elements has only 12 protons - ANS-Mg Which of the following elements is a noble gas - ANS-Kr Which is the identity of the element in Period 5 and Group 2? - ANS-Sr How many neutrons are present in Ne-22 - ANS-12 How many protons and electrons are present in 0^2-? - ANS-8 protons and 10 electrons What is the mass # of the hydrogen isotope that contains 3 neutrons? - ANS-3 An isotope represented as S-34 - ANS-Contains exactly 18 neutrons Which ion the following statements is CORRECT about the isotope 98/43 Tc^7+ - ANSIt has 55 neutrons and 36 electrons Which of the following isotopes will have the same number of neutrons as the fictional isotope 139/58Q - ANS-137/56 Ba The correct symbol for the isotope of potassium with 22 neutrons is - ANS-41/19 K What is the mass # of a bismuth isotope with 124 neutrons? - ANS-207 What is the identity of a neutral atom that has 119 neutrons with mass # =197 - ANS-Pt What is the correct symbol for the isotope of copper with a mass # of 63 - ANS--63/29 Cu A fictional element, Gg, has two naturally occurring isotopes with the natural abundances shown here: Isotope Abundance Gq-18 40.0% Gq-20 60.0% Which of the following statements is TRUE for this element? - ANS-The atomic mass would be colder to 20 than to 18 Continues...