Answer:
B and E
Explanation:
These two options support the theory of plate tectonics.
Answer:
They have similar properties, because they share similar amounts of electrons in their outer shell, valence electrons! This means they will only be able to interact with other elements with those electrons so they often show similar properties.
Explanation:
Answer: 12 atoms
Explanation: the equation has 6H2 i.e
6*2 = 12