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प्रश्न
Give reason for the following:
Ionisation potential decreases down a group.
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उत्तर
As we move down a group, the atomic size increases due to an increase in the outermost shells. As a result, moving down a group is easier to remove because we don't need as much energy. As a result, the ionisation potential of a group falls.
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संबंधित प्रश्न
What do you understand by successive ionization energies?
Among the elements of the second period, Li to Ne, pick out the element with highest first ionization energy
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 : Ionization energy of element C is less than that of element A.
What is meant by ionization potential?
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Ionization potential increases from left to right across a period.
Choose the correct answer from the choice given:
Ionisation potential increases over a period from left to right because the
Fill in the blank by selecting the correct word from the option.
If an element has a low ionization energy then it is likely to be ________
Identify the following:
The energy required to remove an electron from a neutral gaseous atom.
First ionisation enthalpy of two elements X and Y are 500 kJ mol−1 and 375 kJ mol−1 respectively. Comment about their relative position in a group as well as in a period.
Across a period, the ionization potential ______.
