Answer: An atom can be considered unstable in one of two ways. If it picks up or loses an electron, it becomes electrically charged and highly reactive. Such electrically charged atoms are known as ions. Instability can also occur in the nucleus when the number of protons and neutrons is unbalanced.
Explanation:
D is the correct answer
every other option contains an element
Answer:
C) They are not made of matter.
Explanation:
Case in which protons are inside of neutrons doesn't exist.
Answer:
D
Explanation:
the answer is d white precipitate
Element 87 francium have the highest atomic size, so in short the closest element to francium have the high atomic size.
