Question

l SPRING, 2020 hotel st#1 February 24th, 2020 Goslar ame: cudent ID: Onione vestions 1 to 20: Circle the best answer (2.5 points each) ons 21 to 23: Solve using the appropriate Formulas, the method used to ar solution to a problem is considered to be every bit as important as athematical computation (20 points each) uestion 1 Various isotopes of a given element have same: a) Number of protonsaldsia b) Number of neutrons nos todos dere some svi c) Molar mass admun mundong into cuisses d) Thermodynamic stability ende un loc banner estion 2 Atomic number of a species is the number of: a) Neutrons JUOTOS b) Protons c) Valence electrons d) Nucleons estion 3 Species with the same number of neutrons but the different number of protons are called: a) Isotones b) Isotopes c) Isomers d) Isobars ING, 2020 MEC 265 - Materials Science - Test # 1

Answer 1

Date Page No1 Varuose bostabi a quen tment Number brobne In an sotopu condition only a change in atomu na & meer no. Yake Hou, no. of protons maw lane 22 b2 Alone number of a perce & the number of Pestone cq H hae atemu no. I and it has 1 proten also but different number 32 spence with the same no. of neutrone protone are called. a) | Ssstorie e.g. Boron - 12 & Carbon -13 nuclei both contain 7 neutrone Isotones - Beren -122 stomie no Mass no - 12-5 Sostenis: Mass no. - Atemu no -carbon-13) = 136