Answer:
Yes, same piece can be used.
Explanation:
The same piece can be used for two different atoms are acceptable because both atoms has 7 electrons in their outermost valance shell. Both atoms belong to same group i. e. halogens so same piece can be used for both atoms. If the atoms belong to different groups and they have different number of electrons in their outermost shell so using same piece will be a problem so it is recommended to use different pieces for different atoms.
A bond is when two substances are connected to each other by chemical means
I think it’s A
because if the pH is lower than 7 than it is acidic
Answer is: small animals, insects and seeds originating form nearby land masses come to new volcanic island blown over by winds, crashing on shore pushed by the waves. Birds come easy by flying. They adopt to new enviroment or evolve into the new species. This new species are unique.
