Question:
The number of electrons presents in H+ is ___.
Answer:
Zero
Question:
The hardest form of carbon is ___.
Answer:
Diamond
Question:
The mineral containing both magnesium and calcium is ______.
Answer:
Dolomite
Question:
The main chemical constituent of clay is ___.
Answer:
Aluminium silicate
Question:
The iron ore magnetite consists of ___.
Answer:
Fe2O3
