3 years ago

Which element has exactly ﬁve electrons in the highest principal energy level (the outer shell)?

Chemistry

2 answers:

aleksley [76]3 years ago

8 0

Phosphorus (P) has 5 valence electrons in its outer shell, meaning, it needs 3 more to become a stable element.

statuscvo [17]3 years ago

7 0

This question is asking for an element with 5 valence electrons. Just go to the row it is in (excluding transition metals) and count over.
The answer would be c. P

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koban [17]

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2 years ago

Use the balanced equation given below to solve the following problem; Calculate the volume in liters of CO produced by the react

Elan Coil [88]

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Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} Sb_2O_3=\frac{175g}{291.5g/mol}=0.600moles$

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1 moles of $Sb_2O_3$ produces = 3 moles of $CO$

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Thus 40.3 L of CO is produced.

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