Answer:
answer A has four valence electrons
Explanation:
The outer shell has 4 electrons, which are considered the valence electrons
Answer:
-The mole is appropriate only for counting things that are very small.
-One mole is a very large number of something.
-A molecule of water is much smaller than a grain of sand.
Explanation:
The atomic number is the number of the protons in an atom the two particles that add up to equal the mass is the protons and neutrons
The dissolved species that are present in solution of NaClO4 are Na+ , ClO4-
<h3>Explanation</h3>
when substance dissolve in water it dissociate in ions. Some substance dissociate partially when they dissolve in water while others dissociate completely. NaClO4 is a salt which dissociate completely when it dissolve in water to give Na+ and CIO4- ions
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