The Tyndall effect is a simple process for identifying a compound.
1 answer:
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Answer:
7 valence electrons
Explanation:
Astatine has the atomic number 85. Thus, its electron configuration is:
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵
As we can see, in the last level (6) it has 2 + 5 = 7 electrons, that is, astatine has 7 electrons in its valence shell. In the Lewis dot structure (attached) we write 3 pairs of electrons and 1 unpaired electron around the symbol of At.
Answer:
The concentration of will decrease.
Explanation:
According Le Chatelier’s principle:
- If concentration of products are increased the equilibrium will shift in left direction and vice-versa.
- If concentration of reactants are increased the equilibrium will shift in right direction and vice-versa.
On ad adding silver nitrate to the equilibrium mixture, the silver ion will get combine with chloride ion to precipitate silver chloride which will in return will decrease the concentration of chloride ions.
And due to decrease in concentration of chloride ions the the equilibrium will shift in left direction that is in backward direction to re-establish it self with which concentration of will decrease.