Please just indicate if it's True or False. a. When placed in a glass capillary tube, H2O will form a concave meniscus. b. A detergent-water solution has a higher surface tension than pure water. c. Considering (I2, CsBr, CaO), the substance with the smallest enthalpy of fusion is I2. d. Considering (CCl4, CBr4, CF4), the substance with the highest boiling point is CF4. e. Considering (simple cubic, face-centered cubic, hexagonal closed packed) structures, the least efficient packing is the simple cubic. f. In p-type semiconductors, the dopant element typically contains three-valence electrons.
Please just indicate if it's True or False.
a. When placed in a glass capillary tube, H2O will form a concave meniscus.
b. A detergent-water solution has a higher surface tension than pure water.
c. Considering (I2, CsBr, CaO), the substance with the smallest enthalpy of fusion is I2.
d. Considering (CCl4, CBr4, CF4), the substance with the highest boiling point is CF4.
e. Considering (simple cubic, face-centered cubic, hexagonal closed packed) structures, the least efficient packing is the simple cubic.
f. In p-type semiconductors, the dopant element typically contains three-valence electrons.
g. The critical temperature is the temperature above which the vapor cannot be solidified no matter the applied pressure.
h. In the band model, the electrons are assumed to occupy molecular orbitals.
i. Conduction bands are closely spaced molecular orbitals with filled electron spaces.
j. In the electron sea model, the valence electrons in metals are assumed to be fixed in the lattice points.
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