It will be easier to answer if you show the choices.
Answer:
Have no valence electrons because they are stable.
Thank you.
BY GERALD GREAT
Answer: a low 
and low pH.
Explanation:
pH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
![pOH=-log[OH^-]](https://tex.z-dn.net/?f=pOH%3D-log%5BOH%5E-%5D)
Thus as pOH and are inversely related, a solution having higher pOH will have less amount of concentration. And a solution having more pOH will have less pH.
Thus a substance with a high pOH would likely have low concentration and low pH.
the molar mass of Zn is 65
- number of mole(n)=reacting mass/molar mass
- n=45.2/65
- =0.70g/mol
2.the molar mass of Ag is 108
- 0.568=m/108
- then cross multiply
- m=0.568×108
- m=61.3g
