Chapter30 Sample Multiple Choice Problems
1.The atomicmass unit is defined as
Click here?to get an answer to your question ️ The r.m.s speed of helium in ms -1 ( atomic mass = 4.0 g mol -1 ) at 400 K is. 5.44 Built-in functions for atomic memory access. The following builtins are intended to be compatible with those described in the Intel Itanium Processor-specific Application Binary Interface, section 7.4. As such, they depart from the normal GCC practice of using the “builtin” prefix, and further that they are overloaded such that they. In stream water, however, beryllium is more abundant with a concentration of 0.1 ppb. Beryllium is found in over 100 minerals, but most are uncommon to rare. The more common beryllium containing minerals include: bertrandite (Be 4 Si 2 O 7 (OH) 2), beryl (Al 2 Be 3 Si 6 O 18), chrysoberyl (Al 2 BeO 4) and phenakite (Be 2 SiO 4). Joe Rocket Atomic 4.0 Jacket. The Joe Rocket Atomic 4.0 Jacket combines waterproof protection with the Variable Flow ventilation system and included armor. Features: Rock Tex 600 outer shell; 100% waterproof; CE rated protectors in shoulders and elbows; Removable spine pad with pocket for optional CE spine protector.
a.the mass of a proton.
b.the mass of an electron.
c.the mass of a hydrogen-1 atom.
d.one twelfth the mass of a carbon-12 atom.
2.An elementwith atomic mass number of 14 and atomic number 6 has how many neutrons?
a.6
b.8
c.14
![Atomic Atomic](https://www.researchgate.net/profile/Pascual_Roman/publication/225955791/figure/tbl3/AS:668991286697989@1536511360416/Atomic-coordinates-and-isotropic-thermal-parameters-x-10-4-for-non-H-atoms-and-102.png)
d.20
3.Isotopes of anelement have nuclei with
a.the same number of protons, but differentnumbers of neutrons.
b.the same number of protons, and the samenumber of neutrons.
c.a different number of protons, and adifferent number of neutrons.
d.a different number of protons, and thesame number of neutrons.
4.If an atom'satomic number is given by Z, its atomic mass by A, and its neutron number
by N, whichof the following is correct?
Atomic 1 0 4 0 L
a.N = A + Z
b.N = Z - A
c.N = A - Z
d.None of the above is correct.
5. In a {93/41}Nbnucleus, the number of protons, neutrons, and electrons is
a.41, 52, 93
b.41, 52, 52
c.41, 52, 41
d.41, 52, 0
6.The bindingenergy per nucleon
a.increases steadily as we go to heavierelements.
b.decreases steadily as we go to heavierelements.
c.is approximately constant throughout theperiodic table, except for very light nuclei.
d.has a maximum near iron in the periodictable.
7.An alpha particleis also known as
a.an electron.
b.a positron.
c.a helium nucleus.
d.a photon.
8.A beta^- particleis also known as
a.an electron.
b.a positron.
c.a helium nucleus.
d.a photon.
9.The existenceof the neutrino was postulated in order to explain
a.alpha decay.
b.gamma emission.
c.beta decay.
d.fission.
10.When an alphaparticle is emitted from an unstable nucleus, the atomic mass number
of thenucleus
a.increases by 2.
b.decreases by 2.
Os cleaner master pro 2 7 1. c.increases by 4.
d.decreases by 4.
e.none of the above.
11.If 4.0X1018atoms decay with a half-life of 2.3 years, how many are remaining
Atomic 1 0 4 0 1
after 3.7years?
a.2.5X1018
b.1.7X1018
c.1.3X1018
d.1.1X1018
12.A radioactivesample has a half-life of 5.0 min.Whatfraction of the sample is left
after 20min?
b.1/4
c.1/8
d.1/16
13.The half-lifeof radioactive iodine-137 is 8.0 days.How many iodine nuclei are
![Atomic 1 0 4 0 6 Atomic 1 0 4 0 6](https://images.theconversation.com/files/22593/original/4v43s5qy-1366251497.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1200&h=675.0&fit=crop)
necessary to produce an activity of 1.0 micro-Ci?
a.2.9X109
b.4.6X109
c.3.7X1010
d.7.6X1012
14.What happens tothe half-life of a radioactive substance as it decays?
a.It remains constant.
b.It increases.
c.It decreases.
d.It could do any of these.
15.The mass of {90/38}Sr is 89.907737 u and the mass of theatom its beta decays to is
89.907151 u. What is the energyreleased in the decay?
89.907151 u. What is the energyreleased in the decay?
a. 1.2 MeV
b. 112 keV
c.0.546 MeV
d.1.8 MeV
Answers:
1.d
2.b
3.a
4.c
5.d
6.d
7.c
8.a
9.c
10.d
11.c
12.d
Atomic 1 0 4 0 3
13.c
14.a
15.c