Concept explainers
Interpretation:
The neutron to proton ratio for the heavier and lighter elements should be compared along with whether the value of this ratio decrease, increase or remain same as the
Concept Introduction:
The particles which are smaller than the atoms are said to be sub-atomic particles. The three basic sub-atomic particles are electrons, protons and neutrons.
An atom consists of protons, electrons and neutrons. Both neutrons and protons are packed closely together in the central part of the nucleus is known as nucleus. The electrons are in random and uniform motion around the nucleus.
The neutron to proton ratio is defined as the ratio of number of neutrons to the number of protons. It is denoted by n/z (atomic number is same as the number of protons).
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
Introduction to General, Organic and Biochemistry
- 2-27 If each atom in Problem 2-26 acquired two more neutrons, what element would each then be?arrow_forward2-101 Complete the following table: Symbol Atomic number Atomic weight Mass number # of protons # of neutrons # of electrons H 0 Li 4 3 Al 26 58 78 17 20arrow_forward2-103 The element silver has two naturally occurring isotopes: 109Ag and 107Ag with a mass of 106.905 amu. Silver consists of 51.82% 07Ag and has an average atomic mass of 107.868 amu. Calculate the mass of 109Agarrow_forward
- 2-69 (Chemical Connections 2A) Why does the body need sulfur, calcium, and iron?arrow_forward2-31 Tin-118 is one of the isotopes of tin. Name the isotopes of tin that contain two, three, and six more neutrons than tin-118.arrow_forward2-23 It has been said, “The number of protons determines the identity of the element.” Do you agree or disagree with this statement? Explain.arrow_forward
- Mass spectrometric analysis showed that there are four isotopes of an unknown element having the following masses and abundances: Three elements in the periodic table that have atomic weights near these values are lanthanum (La), atomic number 57, atomic weight 138.9055; cerium (Ce), atomic number 58, atomic weight 140.115; and praseodymium (Pr), atomic number 59, atomic weight 140.9076. Using the data above, calculate the atomic weight, and identify the element if possible.arrow_forwardWhat is the name of the element in Group 4A and Period 5?arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher: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 for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning