| Q 3 - Increases the level and separates the nucleus usually spacious area devoid of electrons?? Alonnmikat: is 14 element, atomic numbers from 58 Ce Ce to 71 lutetium Lu and because the properties Chemical and physical properties very similar necessitated the identification effort of many chemists | Increasing atomic radii of the key elements as we head from top to bottom in the group such as increased levels of key |
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| Increasing radius with increasing atomic number in order to increase levels |
Indicates the magnetic quantum number and the symbol M in the direction of astronomy around the nucleus.
3Save 1s - 2s - 2p - 3s - 3p - 4s - 3d - 4p - 5s Electrons fill the lowest energy level of I.