Plug in any number that yo think it’s the answer and make a t chart and put every letter in it and the other side the number until it is balanced
They look like gases plasmas have no fixed shapes or volume and are less dense tan solids or liquids
A forest would have have the most fertile soil
The correct option is B.
Isotopes refers to those chemical compounds which have the same number of protons and electrons but different number of neutrons, so they end up having different mass numbers. The diagram given above is that of beryllium, which has atomic number 4 and it has 2 electrons in its outermost shell. It has four protons [same as the number of electrons] and 5 neutrons. Beryllium 10, which is its isotope has four electrons, four protons and 6 neutrons. To get the number of neutron, remove the number of electrons from the number given in the option, that is, 10 - 4 = 6.
