B because once the circuit is burned the lights will all go of
The best answer to your question would be B:those who could not be broken down by physical means.
Answer:
16,,24Mg 17,,a24.1 18a mass number of the most abundant isotope
Explanation:
atomic number of Mg is 12 ,therefore its mass number should be the value that is very close to 24.
24.1 is the value of thee most abundant isotope.
It condenses very long strings of numbers while retaining the general accuracy of the figure.
