Select the number of valence electrons for fluorine.
2 answers:
Answer : The number of valence electrons in fluorine are, seven.
Explanation :
As we know that the fluorine is a non-metal element that belongs to the group 17 and period 2. The symbol of fluorine element is, (F) and the atomic number of fluorine is, 9.
The electronic configuration of fluorine is,
Electronic configuration : It is defined as the distribution of electrons of an atom in an atomic orbitals.
From the electronic configuration, we conclude that the number of valence electrons present in fluorine is, seven (7).
Hence, the number of valence electrons in fluorine are, seven.
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Answer
× 10²³ molecules are in 41.8 g of sulfuric acid
Explanation
The first step is to convert 41.8 g of sulfuric acid to moles by dividing the mass of sulfuric acid by its molar mass.
Molar mass of sulfuric acid, H₂SO₄ = 98.079 g/mol
Finally, convert the moles of sulfuric acid to molecules using Avogadro's number.
Conversion factor: 1 mole of any substance = 6.022 × 10²³ molecules.
Therefore, 0.426187053 moles of sulfuric acid is equal
Thus, 2.57 × 10²³ molecules are in 41.8 g of sulfuric acid.