Question

which answer best represents the elements and atoms of each element present in ca(oh)₂? a 1 atom of carbon, 2 atoms of oxygen, and 2 atoms of hydrogen b 1 atom of calcium, 2 atoms of oxygen, and 2 atoms of hydrogen c 2 atoms of calcium, 2 atoms of oxygen, and 2 atoms of hydrogen d 1 atom of calcium, 1 atom of oxygen, and 1 atom of hydrogen

Explanation:

Step1: Analyze the formula Ca(OH)$_2$

The formula Ca(OH)$_2$ contains one calcium (Ca) atom. The sub - script 2 outside the parentheses applies to both oxygen (O) and hydrogen (H) inside the parentheses.

Step2: Count oxygen atoms

Since the sub - script 2 is outside the parentheses, there are 2 oxygen atoms.

Step3: Count hydrogen atoms

Similarly, there are 2 hydrogen atoms due to the sub - script 2 outside the parentheses.

Answer:

B. 1 atom of calcium, 2 atoms of oxygen, and 2 atoms of hydrogen