When electrons fill a subshell in which the orbitals have equal energy, the order in which the orbitals are filled is such that
a. a minimum number of electrons has unpaired spins.
b. a minimum number of electrons has intrinsic angular momentum.
c. a maximum number of electrons has unpaired spins.
d. a maximum number of electrons first fills the next energy level.
e. the maximum number of electrons has the same set of quantum numbers.
c
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Oxygen in Earth's atmosphere is outgassed in volcanic eruptions
a. True b. False Indicate whether the statement is true or false
Conservation of Momentum: A rocket explodes into two fragments, one 25 times heavier than the other. The magnitude of the momentum change of the lighter fragment is
A. 25 times as great as the momentum change of the heavier fragment. B. The same as the momentum change of the heavier fragment. C. 1/25 as great as the momentum change of the heavier fragment. D. 5 times as great as the momentum change of the heavier fragment. E. 1/4 as great as the momentum change of the heavier fragment.
Only two elements, mercury and ______________, are liquid at room temperature and atmospheric pressure
a. sodium b. bromine c. phosphorus d. iodine
If the distance between the slits is doubled in Young’s experiment, what happens to the width of the central maximum?
1.The width is doubled. 2.The width is unchanged. 3.The width is halved.