kilograms are the unit that measures mass
Answer:
false
Explanation:
Atoms of the same element that differ in their numbers of neutrons are called isotopes. Many isotopes occur naturally. ... Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and elec
Answer:
option B
cementation and compaction
Answer:
Noble Gases
Explanation:It's not on there but Noble gases is the least reactive element because it has 8 electrons and their outer energy is full.
