Concept explainers
a.
To determine:
The number of electrons and protons in gold.
Introduction:
The mass number of the atom is the sum of neutrons and protons in the atom. The
b.
To determine:
The number of electrons and protons in zinc.
Introduction:
The mass number of the atom is the sum of neutrons and protons in the atom. The atomic number of atom is equal to the number of protons. The isotopes are the elements having same atomic number but different mass number.
c.
To determine:
The number of electrons and protons in the given element.
Introduction:
The mass number of the atom is the sum of neutrons and protons in the atom. The atomic number of atom is equal to the number of protons. The isotopes are the elements having same atomic number but different mass number.
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
EBK LABORATORY MANUAL FOR GENERAL, ORGA
- Copper (Cu) has an atomic number of 29 and a mass number of 64. One copper atom, therefore, has how many protons? a.27 b.29 c.31 d.35arrow_forwardAn atom that has lost three electrons will have a charge of .arrow_forwardDetermine the number of protons and electrons in each of the following ions: a.Mg2+b.Se2-c.O2-d.Fe3+arrow_forward
- Copper is composed of two naturally occurring isotopes: Cu-63 with a mass of 62.94amuandCu-65 with a mass of 64.93amu. Look up the atomic mass of copper and determine which of the two isotopes is more abundant. a.Cu-63ismoreabundant.b.Cu-65ismoreabundant.c.Bothisotopesareequallyabundant.arrow_forwardHow many valence electrons are in each element of problem 28?arrow_forwardNaturally occurring sodium has a single isotope. Determine the following for the naturally occurring atoms of sodium: a. The number of neutrons in the nucleus. b. The mass in u of the nucleus to three significant figures.arrow_forward
- Naturally occurring aluminum has a single isotope. Determine the following for the naturally occurring atoms of aluminum: a. The number of neutrons in the nucleus. b. The mass in u of the nucleus to three significant figures.arrow_forwardThe element lanthanum has two stable isotopes, lanthanum 138 with an atomic mass of 137.9071u and, lanthanum 139 with an atomic mass of 138.9063u. From atomic mass of La, 138.9u what conclusion can you make about the relative percentage abundance of the isotopes?arrow_forwardWhat is the mass number of an atom with 60 protons, 60 electrons, and 75 neutrons? a. 120 b. 135 c. 75 d. 195arrow_forward
- What is the modern view of the structure of the atom?arrow_forwardThe atomic mass of lithium on a periodic table is 6.94u. Lithium has two natural isotopes with atomic masses of 6.10512u and 7.01600u. Calculate the percentage distribution between the two isotopes. Pure lithium is composed of two isotopes.arrow_forwardNaturally occurring lithium is composed of two isotopes: 7.59 at 6.0151224u and 92.41 at 7.0160041u. Use these data to determine the atomic mass of lithium.arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning