Physical Universe
15th Edition
ISBN: 9780077510534
Author: KRAUSKOPF
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 8, Problem 4MC
To determine
The quantity differs in an isotope.
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Students have asked these similar questions
Isotopes of an element contain:
A. the same number of protons but different number of neutrons
B. the same number of neutrons but different number of protons
C. equal number of protons and electrons
D. equal number of nucleons
If an atom gives off an alpha particle what happens to the mass number of the atom?
A. Decreases by two
B. Increases by two
C. Decreases by four
D. Increases by four
6. The particles in the nucleus that have a positive charge are the
b. neutrons
a. electrons
c. protons
d. positrons
7. Elements that are not good conductors of heat or electricity are the
b. non-metals
a. metals
c. metalloids
d. solids
8. On the periodic table, the number of electrons is equal to-
b. the atomic weight
a. the mass number
c. the atomic number
d. the number of neutrons
9. Electrons are located in the
a. Electron cloud
b. cumulus cloud
c. nucleus cloud
d. fog
10. According to Dalton, these can not be created or destroyed.
b. heat
d. radioactivity
a. Matter
C. atoms
11. Group 2 on the Periodic Table is also known as the
a. Halogens
b. Noble Gases
c. Alkali metals
d. Alkaline earth metals
12. Elements on the right side of the Periodic Table are
b. non-metals
a. metals
c. liquids
d. solids
13. Elements from the Periodic Table that are malleable and ductile are called
a. metalloids
b. gases
c. metals
d. non-metals
14. Electrons that are located
a. closest to
the nucleus have…
Chapter 8 Solutions
Physical Universe
Ch. 8 - Prob. 1MCCh. 8 - Prob. 2MCCh. 8 - Prob. 3MCCh. 8 - Prob. 4MCCh. 8 - Prob. 5MCCh. 8 - Prob. 6MCCh. 8 - Prob. 7MCCh. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MC
Ch. 8 - Prob. 11MCCh. 8 - Prob. 12MCCh. 8 - Prob. 13MCCh. 8 - Prob. 14MCCh. 8 - Prob. 15MCCh. 8 - Prob. 16MCCh. 8 - Prob. 17MCCh. 8 - Prob. 18MCCh. 8 - Prob. 19MCCh. 8 - Prob. 20MCCh. 8 - Prob. 21MCCh. 8 - Prob. 22MCCh. 8 - Prob. 23MCCh. 8 - Prob. 24MCCh. 8 - Prob. 25MCCh. 8 - Prob. 26MCCh. 8 - Prob. 27MCCh. 8 - Prob. 28MCCh. 8 - Prob. 29MCCh. 8 - Prob. 30MCCh. 8 - Prob. 31MCCh. 8 - Prob. 32MCCh. 8 - Prob. 33MCCh. 8 - Prob. 34MCCh. 8 - Prob. 35MCCh. 8 - Prob. 36MCCh. 8 - Prob. 37MCCh. 8 - Prob. 38MCCh. 8 - Prob. 39MCCh. 8 - Prob. 40MCCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Prob. 4ECh. 8 - Prob. 5ECh. 8 - Prob. 6ECh. 8 - Prob. 7ECh. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - Prob. 10ECh. 8 - Prob. 11ECh. 8 - Prob. 12ECh. 8 - Prob. 13ECh. 8 - Prob. 14ECh. 8 - The polonium isotope 84210Po undergoes alpha decay...Ch. 8 - Prob. 16ECh. 8 - Prob. 17ECh. 8 - Prob. 18ECh. 8 - Prob. 19ECh. 8 - Prob. 20ECh. 8 - Prob. 21ECh. 8 - If the half-life of a radionuclide is 1 month, is...Ch. 8 - Prob. 23ECh. 8 - One-eighth of a sample of T90227h remains...Ch. 8 - Prob. 25ECh. 8 - Prob. 26ECh. 8 - Prob. 27ECh. 8 - Prob. 28ECh. 8 - Prob. 29ECh. 8 - Prob. 30ECh. 8 - Prob. 31ECh. 8 - Prob. 32ECh. 8 - Prob. 33ECh. 8 - Prob. 34ECh. 8 - Prob. 35ECh. 8 - Prob. 36ECh. 8 - Prob. 37ECh. 8 - Prob. 38ECh. 8 - Prob. 39ECh. 8 - Prob. 40ECh. 8 - Prob. 41ECh. 8 - Prob. 42ECh. 8 - Prob. 43ECh. 8 - Prob. 44ECh. 8 - Prob. 45ECh. 8 - Prob. 46ECh. 8 - Prob. 47ECh. 8 - Prob. 48ECh. 8 - Prob. 49ECh. 8 - Prob. 50ECh. 8 - Prob. 51ECh. 8 - Prob. 52ECh. 8 - Prob. 53ECh. 8 - Prob. 54ECh. 8 - Prob. 55ECh. 8 - Prob. 56ECh. 8 - Prob. 57ECh. 8 - Prob. 58E
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- Find the atomic numbers, mass numbers, and neutron numbers for (a) 2958Cu,(b) 1124Na , (c) 84210Po(d) 2045Caand(e) 82206Pb -arrow_forwardWhat are isotopes? Why do isotopes of the same atom share the same chemical properties?arrow_forward(a) Calculate BEN for 235U, the rarer of the two most common uranium isotopes; (b) Calculate BEN for 238U(Most of uranium is 238U .)arrow_forward
- (a) An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is 1.00 m in diameter, how big should she try to make the nucleus? (b) How easy will this be to do?arrow_forwardUnreasonable Results The relatively scarce naturally occurring calcium isotope 48Ca has a halflife at about 21016y. (a) A small sample of this isotope is labeled as having an activity of 1.0 Ci. What is the mass of the 48Ca in the sample? (b) What is unreasonable about this result? (c) What assumption is responsible?arrow_forwardAccording to your lab partner, a 2.00-cm-thick sodium-iodide crystal absorbs all but 10% of lays from a radioactive source and a 4.00-cm piece of the same material absorbs all but 5%? Is this result reasonable?arrow_forward
- (a) Calculate BE/A for 12C. Stable and relatively tightly bound, this nuclide is most of natural carbon. (b) Calculate BE/A for 14C. Is the difference in BE/A between 12C and 14C signi?cant? One is Stable and common, and the other is unstable and rare.arrow_forwardA sample of pure carbon-14 ( T1/2=5730y ) has an activity of 1.0Ci . What is the mass of the sample?arrow_forwardData from the appendices and the periodic table may be needed for these problems. 53. You can sometimes find deep red crystal vases in antique stores, called uranium glass because their color was produced by doping the glass with uranium. Look up the natural isotopes of uranium and their halflives, and calculate the activity of such a vase assuming it has 2.00 g of uranium in it. Neglect the activity of any daughter nuclides.arrow_forward
- Why is the number of neutrons greater than the number of protons in stable nuclei that have an A greater than about 40? Why is this effect more pronounced for the heaviest nuclei?arrow_forwardData from the appendices and the periodic table may be needed for these problems. Unreasonable Results (a) Repeat Exercise 31.57 but include the 0.0055% natural abundance of 234U with its 2.45105y halflife. (b) What is unreasonable about this result? (c) What assumption is responsible? (d) Where does the 234U come from if it is not primordial?arrow_forward(a) Calculate BE/A for 235U, the rarer of the two most common uranium isotopes. (b) Calculate BE/A for 238U. (Most of uranium is 238U.) Note that 238U has even numbers at both protons and neutrons. Is the BE/A of 238U significantly different from that of 235U?arrow_forward
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