Answer:
6
Explanation:
The given reaction is aluminium with hydrochloric acid
2Al + 6HCl → 2AlCl3 + 3H2
the product is aluminium chloride and hydrogen gas.
We can clearly, calculate that there are 2*3=6 chlorine atoms in product side of the reaction.
Answer:
By designing new technology that would prove new information
Explanation:
Answer:
The correct answer is 4). A total of 8?valence electrons
Explanation:
The argon corresponds to a noble or inert gas, like Helium, and has its complete octet in the last layer.
Answer is: P (phosphorus).
Magnesium form cation Mg²⁺, Mg lost 2 electrons, ionic radius decreases.
Aluminium form cation Al³⁺, lost 3 electron, radius decreases.
Phosphorous can form the phosphide anion P³⁻, gain 3 electrons, ionic radius increases.
Sulfur can form anion S²⁻, gain 2 electrons, but have one proton more than phosphorus, so smaller radius.
Answer: B) 12.5
Explanation: I looked REALLY REALLY close
(It hurt my eyes but whatever)