What type of bond is(are) individually weakest?
a. hydrogen
b. ionic
c. covalent
d. Hydrogen and covalent are equally weak.
e. Ionic and covalent are both weaker than hydrogen.
a
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The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then
Fill in the blank(s) with correct word
A quantum of electromagnetic radiation is a
a. wave function. b. photon. c. de Broglie wave. d. laser. e. hologram.
When the reflection of an object is seen in a plane mirror, the image is:
a. real and upright. c. real and inverted. b. virtual and upright. d. virtual and inverted.
A bird sitting on a bare high voltage wire is not electrocuted because
a. of the high resistance of its body b. there is no electrical potential difference across its body c. its body is at a low electrical potential compared to the wire d. the high voltage across its feet produced a small current