NaOH is an example of an ionic crystal.
Option a
<h3><u>Explanation:</u></h3>
Sodium Hydroxide is a "white solid ionic compound" consisting of sodium cations Na+ and hydroxide anions 
. If we look at the crystal structure of NaOH, we can see that it has the combinations of ionic and covalent bonds. The bond that is shared between Oxygen ( O ) and Hydrogen ( H ) is the covalent bond.
The Sodium ( Na ) is bonded with an "ionic bond to the hydroxide part of the compound". NaOH is an ionic solid because it is formed by the combinations of metal and non-metal. When the crystal of NaOH is dissolved in water it dissociates into Na+ ions (which is ionic in nature) and ions which bonds ionically to the other compounds.
It means “the study of.” Think of it:
Those are subjects you study. It makes more sense than the other choices.
Atomic number Bi = 83
electron configuration Bi : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3
p orbitals = 3p6, 4p6, 5p6 and 6p3
so, 6 + 6 + 6 + 3 = 21 electrons
The myth that peppermint makes you smarter, is false, but there are
benefits to the scent of peppermint. Although, eating peppermint
flavored candies is not as beneficial as actually smelling the
peppermint before the test.
Peppermint in
many forms such as tea, candy, and oil can be used to help improve
mental awareness. The menthol “stimulates the Hippocampus area of the
brain which controls mental clarity and memory. The odor triggers you to
wake up and pay attention.” This explains why many people believe that peppermint makes you smarter, when really it makes you more alert.
Peppermint also has the ability to improve athletic performance as well as helping to improve reaction times.
Overall, peppermint can improve your mental awareness but, no, it does not actually make you smarter.
