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प्रश्न
Name the elements with highest and lowest ionization energies in the first three periods.
उत्तर
Helium (He) has the highest ionization energy of all the elements, while Caesium (Cs) has the lowest ionization energy.
संबंधित प्रश्न
Choose the correct answer from the options given below:
Ionisation potential increases over a period from left to right because of the
(A) Atomic radius increases and nuclear charge increases
(B) Atomic radius decreases and nuclear charge decreases
(C) Atomic radius increases and nuclear charge decreases
(D) Atomic radius decreases and nuclear charge increases
Represent ionisation potential in the form of an equation. In which unit it is measured?
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?
Electron affinities of two elements A and B are given below:
A = 3.79 electron volts
B = 3.56 electron volts
Which of them will ionize more easily and why?
Arrange the following as per instruction given in the bracket.
Na, K, Cl, S, Si (increasing ionisation potential)
Arrange the following as per the instruction given in the bracket
Na,Li,K (Increasing ionization energy)
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The ionization potential:
Arrange the following in order of increasing ionisation energy:
F, O, Ne
Explain your choice.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
