There are 4 electron pairs (3 bonding and 1 lone pair) so the angle is 107 degrees. The 4 electron pairs are repelled to give a tetrahedral arrangement but the molecule has a pyrimidal shape due to the lone pair.
Answer:
has large mineral crystals
Answer:
magnification and resolution
Explanation:
Two parameters are especially important in microscopy: magnification and resolution. Magnification is a measure of how much larger a microscope (or set of lenses within a microscope) causes an object to appear.
Bond energy is a measure of the bond strength of a chemical bond, and is the amount of energy needed to break the atoms involved in a molecular bond into free atoms.
Answer:
b.
Explanation:
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