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4. What is the amount of valence electrons in an atom equivalent to?
A) The amount of protons an atom has
B) The group the atom is located
C) The period the atom is located
D) The amount of electrons an atom has


6. How many sodium (Na) and oxygen (O) atoms are needed to form the ionic compound sodium oxide?

A) There needs to be 1 Na atom and 2 O atoms to form Na2O
B) There needs to be 1 Na atom and 1 O atom to form Na2O
C) There needs to be 2 Na atoms and 1O atom to form Na2O
D) There needs to be 2 Na atoms and 2O atoms to form Na2O

Respuesta :

Answer:

4. A

5. I don't see the correct answer, but 2 sodium and one oxygen.

Explanation:

4., Because the amount of electrons needs to be equal to the number of protons to balance out charges.

5. You can find it on the web.

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