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: A. The compound CuCl is 500 times less soluble in sea water than it is in pure water.
pure water.
Explanation:
Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.
This principle states that if there is any change in a equilibrium reaction, the equilibrium will shift in a direction so as to minimize the effect.
Thus when a common ion is introduced to an equilibrium reaction, the equilibrium will shift in a direction where the concentration of common ion is decreasing.
When common ion such as from NaCl in sea water is introduced to an equilibrium reaction, the equilibrium will shift in a direction where the concentration of common ion is decreasing i.e. in the left side and thus solubility of CuCl further decreases.