Which of the following correctly describe ionization energies?
A) Ionization energies are always positive, the process is always endothermic.
B) Ionization energies generally increases as we go from top to bottom within a column of the periodic table.
C) both a and b
D) neither a nor b
A
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Across the developing world, children are considered an economic investment because they will be able to work and contribute to the family's income.
a. true b. false
A dense cloud of pyroclastic materials and a glowing cloud of gases and dust is called a(n) ____
A)nuée ardente B)ash cloud C)eruptive blast D)mantle plume E)fumerole
Seiches are dangerous to begin with, but which of the following situations is particularly dangerous during seiche formation?
A) Lake B) Reservoir behind an earthen dam C) Restricted bay D) In-ground swimming pools