Advertisements
Advertisements
Question
What is electron affinity?
Advertisements
Solution
Electron affinity is the energy released when an electron is added to an isolated gaseous atom to form the negative ion (anion).
Unit: Its units are electron volt (eV).
Its SI units are Kilojoules per mole (KJmol-1).
APPEARS IN
RELATED QUESTIONS
Arrange the elements of second period in increasing order of their electron affinity. Name the elements which do not follow the trend in this period.
Which has higher E.A. fluorine or Neon?
An element in period 3, whose electron affinity is zero:
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 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of element A is more than that that of element C.
Fill in the blank
Noble gases have ______ electron affinity.
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
The electron affinity of an element X is greater than that of element Y.
How is the electronegativity of X likely to compare with that of Y?
