Answer:
option A is the correct answer .
Explanation:
as density = mass per unit volume
density = 7.5/2.5 = 3 gm / cm³ ..is the answer ...
pls mark my answer as brainlist plzzzz and plz vote
A) Burning
Burning is a chemical reaction while the other three answers are physical reactions.
B)
<span>
a subatomic particle with no electric charge, found in the nucleus of an atom </span>
Answer:
False
Explanation:
The answer is false because unlike the main group elements, the transition metals have different valency. They exhibit variable valency and this is because of the presence of the d orbitals.
The significant figure is only 1 which is just the number 5. The zeros don't count.
