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Ksju [112]
2 years ago
13

4. Base your answer to the following question on the elements in Group 2 on the Periodic Table. State, in terms of the number of

electron shells, why the radius of a strontium atom in the ground state is larger than the radius of a magnesium atom in the ground state.​
Chemistry
1 answer:
Zolol [24]2 years ago
5 0

Answer:

The atomic radius of strontium is larger than magnesium because there are more number of shielding electrones in strontium than magnesium, which causes electron-electron repulsion, that makes the electrons in valance shell to expand. Hence it would decrease the effective nuclear charge.

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Combustion of 9.511 grams of c4h10 will yield ____ grams of CO2
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\boxed{28.81}

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We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.  

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The molar ratio is 8 mol CO₂:2 mol C₄H₁₀

\text{Moles of CO}_{2} =\text{0.1636 mol C$_{4}$H$_{10} $} \times \dfrac{\text{8 mol CO}_{2}}{\text{2 mol C$_{4}$H$_{10}$}} = \text{0.6546 mol CO}_{2}

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