Answer:
There's a total of 8 oxygen atoms in the formula Cu3(PO4)2
 
        
             
        
        
        
Gabriel Fahrenheit invented the thermometer
        
             
        
        
        
Answer:
The metals in this group are lithium, sodium, potassium, rubidium, cesium, and francium. The gas hydrogen is also put in this group because it shares similar reactivity with the alkali metals.
I don't know if this is what you wanted or not sorry if it isn't