Chemistry is an interesting subject whose history dated far back. It is the study of matter. In another words study of anything that has mass and occupy space. So it is basically study of almost all things. Most basic concepts a Chemistry student need to master includes;chemical nomenclature,atomic structure,periodic table,lewis structure, chemical reaction, stoicchometry ,acid base chemistry.
Electron affinity decreases down the group
Electron affinity decreases across the period
Electron affinity varies according to element group
Non of the above
Metals have high electron affinity
Halogens have high electron affinity
Non of the above
All of the above
When one atom takes an electron from another
When one atom takes a proton from another
When one atom takes neuron from another
Non of the above
H3O
H2O
NH3
Nacl
When an atom splits electrons
When atoms rejects eletron
When atoms shares electrons
Non of the above
Nacl
Kcl
H2O
Alcl3
International union of pure and applied chemistry
International union of petroleum and aero chemicals
Internal united political advancement countries
Non of the above
Sodium nitrite
Nitrate chlorine
Sodium chlorine
Sodium chloride
Nitrate
Nitrogen two minus
Nitrite
Nitrogen oxygen
Nitrate
Nitrite
Nitrogen oxygen
Nitrogen three minus