Carbon can be used in fuel
Answer:
1.81 x
molecules H2
Explanation:
Use Avogadro's number:
3 moles H2 x 6.022 x
molecules= 1.81 x
molecules H2
Answer:
Within a group trend
Explanation:
The atomic radius of atoms generally increases from top to bottom within a group trend. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. As the atomic number increases within a period, the atomic radius decreases.