Answer
The answer is explained in the attachment.
There are 7 valence electrons in a Chlorine atom. A chlorine atom needs one more electron to have a complete octet.
Explanation:
The answer is explained in the attachment.
There are 7 valence electrons in a Chlorine atom. A chlorine atom needs one more electron to have a complete octet.
Answer:
secondary, because there are some remains of the previous community (C)
Explanation:
NH3 is a molecule with a nitrogen atom in the middle surrounded by 3 hydrogen atoms bonded covalently. Nitrogen has 5 valence electrons so, it will form sigma bonds (sp3 hybrid orbitals) with each of the hydrogen atom. The remaining lone pair electrons will be situated above the atom. You ca look at this image I've pulled from Google.
The percent composition of each element can be calculated as follows:
% composition = (mass of element / total mass) * 100
The total mass of the quarter is given to be 5.670 grams
Mass of Cu = 5.198 grams
Mass of Ni = 0.472 grams
Substitute in the above equation to get the mass percentage of each element as follows:
% of Cu = (5.198/5.670) * 100 = 91.675%
% of Ni = (0.472/5.670) * 100 = 8.325%
