The actual answer is C!!!!!
Answer:
B-29
Explanation:
Since there are 29 positive charges in the nucleus, there must be 29 negative charges. And cause the atomic number of copper is 29.
Answer:
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Answer:
Holmium
Explanation:
Electronic configuration:
[Xe] 6s² 4f⁵ 5d⁶
To know this element, we must first find the atomic number and then look for its position on the periodic table.
Number of electrons in [Xe] = 54;
So the total number of electrons = 54 + 2 + 5 + 6 = 67
This element has an atomic number of 57. On the periodic table, it is Holmium
Answer:
it's the same if rounded off to the nearest decimal or slightly different if not.
Explanation:
The enthalpy of formation is -431.6 kJ, while the bond energy of H-Cl is -432 kJ.