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Question
Name the periodic property which relates to the amount of energy required to remove an electron from an isolated gaseous atom.
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Solution
Ionisation potential
RELATED QUESTIONS
Define the term ‘ionisation potential`.
Which element has:
two shells, both of which are completely filled with electrons?
Which element from the following has the highest ionization energy?
Explain your choice.
P, Na, CI
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.
Fill in the blank from the choices given below
Across a period, the ionisation potential ____________.
Arrange the following as per instruction given in the bracket.
Li, K, Na, H (decreasing order of their potential ionisation)
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.
Give reason:
Ionisation potential of the element increases across a period from left to right.
This question refers to the elements of the Periodic Table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but the letters are not the usual symbols of the elements.
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A | B | C | D | E | F | G | H |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| I | J | K | L | M | N | O | P |
Which of these have least Ionisation Energy?
