Explanation:
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Answer:
KCl + AgNO₃ —> AgCl + KNO₃
Explanation:
To answer the question correctly, we must understand the definition of a double displacement reaction.
A double displacement reaction is a reaction in which the ions of the two reacting compounds exchange to form new compounds different from the two reacting compounds. Example is given below:
XY + AB —> XB + AY
Considering the options given in the question above, only the equation:
KCl + AgNO₃ —> AgCl + KNO₃
Satisfy the definition of a double displacement reaction.
Answer : The diameter in picometer is, 
Explanation :
As we are given that the diameter of an atom is 
. Now we have to convert it into picometers.
Conversion used from meter to picometer is:
As,
So, 
Thus, the diameter in picometer is,
