Neutrons are located
1 answer:
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Answer:
C. Bromine
Explanation:In ionic bond , the metals looses electron and the non metal gains electron.
In the given options ;
Aluminum (Al)= METAL
Copper (Cu) = METAL
Bromine (Br) = NON METAL
Oxygen (O) = NON METAL
That leaves us with bromine and oxygen.
Oxygen has an electronic configuration of 2,6.(see image).
So oxygen needs to gain two electrons.
Bromine has one valence electron ( see image).
So therefore , Bromine needs to gain one electron as It is in Group VII
This problem is providing us with two reactions between gold (III) chloride and cobalt in order to obtain the two possible cobalt chlorides and gold. Thus, it asks for the most feasible reaction, which is found to be the second one.
<h3>Uses of stoichiometry</h3>In chemistry, relationships between moles and grams in chemical reactions can be studied via stoichiometry, which is based on proportional factors relating molar masses and mole ratios in chemical equations.
In this case, since we have two reactions and the same initial amount of cobalt, one can calculate the grams of solid gold, with the 1:1 mole ratio of these two in the first reaction and the 3:2 mole ratio in the second one and their atomic masses of 58.933 g/mol and 196.966 g/mol respectively:
Thus, since the second reaction would produce 13.56 grams of gold, and it is pretty much the same to the recovered amount of 13.572 grams, one concludes the second reaction took place in the experiment.
Learn more about stoichiometry: brainly.com/question/9743981