In order to transfer liquid we need
a) a funnel: an apparatus which transfers liquid from one glassware to other (of narrow mouth) without spilling
b) We should use a beaker (a glassware with a beak for proper transfer) to transfer liquid from it to other glass apparatus.
c) other things are like transparent clear dry and clean apparatus should be used
Br₂ + FeBr₃----->Br-Br-FeBr₃
In this reaction, FeBr₃, is a electron-deficient species that is it act as a lewis acid.
While Br₂, donates its electron to FeBr₃.
Br₂, act as a electrophile while FeBr₃ is a lewis acid.
Futher if Br₂, undergoes a reaction an aromatic ring , then that ring will attack Br₂, and it acts as a electrophile.
Particles as small as atoms exist.
Isotopes have the same atomic number or same number Protons, but different mass number or neutrons.
You can say atomic number or protons.
22 neutrons 20 protons
atomic number 20 and a mass number 40
Atomic number 20 and mass # 42
