The mass of calcium that release the same no. of valence electrons as 23 g of Na:
Correct answer: A. 20 g
- A. 20 g
- B. 30 g
- C. 50 g
Explanation
As we know sodium has 1 valence electron while calcium has 2 valence electron so if 23g of sodium which is equal to 1 mole of sodium release the electronSo if we take 1 mole of sodium and compare it with 1 mole of calcium which equals to 40 g it will release double electron because calcium has 2 electron in it's valence shell so it's half which is 20 g will release the same amount of valence electron as that of 23 g of sodium
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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