D) When atoms form ions they become more stable as they gain a ?
1 answer:
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Answer:
Seven
Explanation:
The 3 means that you must multiply everything inside the parentheses by 3.
If you write the formula as AlO₃H₃, it is easier to count the atoms.
A:l 1 atom
O: 3
H: <u>3 atoms</u>
7 atoms
There are seven atoms in one formula unit of Al(OH)₃.
