Examine the following scales. The correct reading to all possible significant figures is: 1st scale is at 0, 2nd is at 1, 3rd is at .2
answers:
1.2 g
1.012 g
1.200 g
11.20 g

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

answer; 4 electrons;