Answer:
0.032 mole
Explanation:
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Answer:
54
Barium atomic number is 56, this means that it has 56 protons in its nucleus and put it as a period 6 element. an uncharged barium atom would have 56 electron also. However as a group 2 element barium easily loses 2 electron to form the +2 cation. the ions has 56-2=54
<span>These atoms are known as valence atoms.</span>
The answer is in the attachment below:
