12 protons
13 neutrons
12 electrons
An isotope is an atom with a different number of neutrons but same number of protons
Its FeSO3 or iron(iii)sulfite = Fe2(SO3)3
A physical property is a property that does not change the original substance, meaning that it does not break any bonds, nor for any new ones. Though, a physical property can be changing the substances state of matter.
When you are boiling water, you are changing its state to go from a liquid to a gas. The temperature is not a characteristic physical property because it doesn't help us know a lot about that substance, in other words, it isn't significant to the substance. Same goes for volume.
Explanation:
A 57.9 g sample of glass is cooled by 2.70'C how much heat does it release
1560