Shell Radius: The distance between adjacent orbits in a hydrogen atom
A. increases with increasing values of n.
B. decreases with increasing values of n.
C. remains constant for all values of n.
D. varies randomly with increasing values of n.
Answer: A
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Ideal Gas Law: A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K. The atomic mass of neon is 20.2 g/mol. How many neon atoms are in the flask? (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol)
A. 2.3 × 1023 B. 2.3 × 1022 C. 6.9 × 1023 D. 2.3 × 1025 E. 6.9 × 1022
The largest component of ionizing radiation the average American receives is from:
a. radon b. cosmic rays c. TV d. medical x-rays e. terrestrial sources
If the distance between two spherical charged objects decreases by a factor of two, then the electrical force between the objects
A. is half as big. B. doubles. C. increases by a factor of four. D. decreases by a factor of four. E. does not change.
The term probability is associated with the model of the atom proposed by ______________
Fill in the blank(s) with correct word