Concept explainers
Interpretation:
The number of neutrons in an isotope
Concept introduction:
An atom consists of a nucleus and extranuclear space. The nucleus of an atom is composed of protons and neutrons while the extra nuclear space contains electrons.
Atoms of an element can exist in more than one forms. Each form is termed as an isotope and differs from the other forms in the number of neutrons. The number of protons and electrons are equal in all the forms.
So, the number of neutrons is calculated as follows:
Trending nowThis is a popular solution!
Chapter 3 Solutions
Chemistry In Focus
- 40K is used to measure the age of Earth. Determine the number of protons and neutrons in 40K.arrow_forwardAn average atomic nucleus has a diameter of about m.arrow_forwardThe isotope of plutonium used for nuclear fission is 239Pu . Determine (a) the ratio of the number of neutrons in a 239Pu nucleus to the number of protons, and (b) the number of electrons in a single plutonium atom.arrow_forward
- Naturally 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_forwardThe isotope Si-28 has a mass of 27.977 amu. For ten grams of Si-28, calculate (a) the number of atoms. (b) the total number of protons, neutrons, and electrons.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
- Label the subatomic particles shown in Figure 4.22.arrow_forwardA fundamental idea of Daltons atomic theory is that atoms of an element can be neither created nor destroyed. We now know that this is not always true. Specifically, it is not true for uranium and lead atoms as they appear in nature. Are the numbers of these atoms increasing or decreasing? Explain.arrow_forwardWhat particles are found in the nucleus of an atom? What is the charge of the nucleus?arrow_forward
- How many platinum atoms are in a pure platinum ring weighing 4.32 g?arrow_forwardWhich particles in an atom are most responsible for the chemical properties of the atom? Where are these particles located in the atom?arrow_forwardCarbon A carbon atom has a mass number of 12 and an atomic number of 6. How many neutrons does it have?arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningChemistry: 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 Learning
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning