Answer:
try c atom i hope this helps!! : )
Explanation:
Bromine 35
Chlorine 17
Flourine 9
Iodine 53
Astatine 85
The answer would be:
D = M/V
D=Density
M= mass
V= volume
The mass number of an isotope is determined by the number of neutrons in the isotope plus the number of protons.
For instance Carbon-13 is an isotope of carbon. The "13" is the mass number of the isotope.
So, in this example, 13 = #protons + #neutrons
Dark is just absence of light like if the re container a and container b u nee to pour hcl from a to so a has hcl while b has absence of hcl
tell me if u need more examples.hope it helps