✅ Correct Answer: Silicon
Source: This question is taken from the Everyday Science
✅ Correct Answer: acellular
✅ Correct Answer: radio active gas
✅ Correct Answer: A class of nucleic acids
✅ Correct Answer: Oxygen
✅ Correct Answer: smallest particle of an element which can undergo a chemical reaction
✅ Correct Answer: 5.972 × 1024 kg.
✅ Correct Answer: Mineral