Noble gas notation for molybdenum:
[Kr] 4d^5 5s^1
Answer:
atoms of isotopes of an element have different numbers of neutrons.
Explanation:
isotopes have the same number of protons, but different numbers of neutrons.
The particles are quite tightly packed together but still have enough room to be able to move and flow, their bonds aren't as strong as a solids are
The sun is made up of two main elements, hydrogen and helium.
- Hydrogen makes up about 92% of all of the atoms in the sun while helium makes up about 7.8%.
- Oxygen, carbon, neon and nitrogen make up most of the remaining 0.2%.
Answer: D, splitting water into hydrogen and oxygen is a chemical change.
