Hepta is seven and tetra is four, so option c is your answer
This is because oxygen (2.8.6) requires two electrons on its valence shell to attain stable configuration (2.8.8). Hydrogen (1) on the other hand requires one electron on its valence shell to attain stable configuration (2). Therefore in a covalent bond, it requires two hydrogen and one oxygen to share electrons and achieve stable configuration.
A hypothesis is a prediction of what you believe to be true.
Answer:
water was added to powdered rock
Explanation:
