Question

Let IP stand for ionization potential. Then element for which the value of IP1, IP2, IP3, IP4 are 50,100,250 and 2051 eV respectively, is

Answer 1

Answer:

The valency of an element is 3

Answer 2

The element has a valency of 3 and can be Aluminium, Boron, gallium, etc.

• IP stands for ionization potential, which is the energy required for an atom to release the valence electron upto infinity.

• Now, the successive IPs are 250 eV, 100 eV, 250 eV and 2051 eV.

• So, after releasing three successive electrons, the atom achieved octet state configuration which is actually a noble gas configuration. Hence, the 4th IP became so high as compared to the IP1 , IP2, IP3 because the ion doesnt want to leave the stable state.

• So, valency of the element is 3.

• So, the element can be anything belonging to group 13 of the MODERN PERIODIC TABLE (i.e. boron, aluminium, gallium, indium, etc.)

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