2 years ago

I need help with number 5

1 answer:

pochemuha2 years ago

7 0

The answer is package c because each cd would cost $1.87, which is the lowest price

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V125BC [204]

Answer:

$1s^22s^22p^63s^23p^63d^{4}$

Explanation:

Manganese is the element of group 7 and forth period. The atomic number of Manganese is 25 and the symbol of the element is Mn.

The electronic configuration of the element, manganese is -

$1s^22s^22p^63s^23p^63d^{5}4s^2$

To form $Mn^{3+}$ , it will lose 3 electrons from the valence electrons and thus the configuration of the ion is:-

$1s^22s^22p^63s^23p^63d^{4}$

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Vlad1618 [11]

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Na2CO3

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