Answer:
b. The shorter the half-life, the more dangerous the radioisotope.
The answer to problem is [He] 2s1. Hope it helps
John Dalton
Although the concept of the atom dates back to the ideas of Democritus, the English meteorologist and chemist John Dalton formulated the first modern description of it as the fundamental building block of chemical structures.
The properties of organic compounds is determined by <u>A) Their boiling point</u><u />.
Answer:
Radium
Explanation:
It has the highest atomic number so it would have more shells, making it larger than the others.
