A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
|Element||Atomic number||No. of electrons in the valence shell||Group to which the element belongs|
|A||Z - 1|
|C||Z + 1|
Also, explain the following : Electron affinity of B is Zero.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.
The following questions refer to the Periodic Table.
Which of the elements has the greatest electron affinity among the halogens?