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Harlamova29_29 [7]
3 years ago
14

How does the periodic table indicate the number of valence electrons element has?

Chemistry
1 answer:
Yuri [45]3 years ago
7 0

option A.

The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized

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This is a one-step unit analysis problem.  Since we are staying in moles, grams of our compound, and thus molar mass, is not needed.

1 mole is equal to 6.022x10²³ particles as given, so:

1.5x10^{24} particles FeO_{2} (\frac{1mol}{6.022x10^{23}particles } )=2.49 molFeO_{2}

<h3>Answer:</h3>

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Answer:

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