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प्रश्न
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.
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उत्तर
Ionisation Enthalpy or potential is highest on the right side of the periodic table and lowest on the left side. Elements X and Y seem to be metals, which are on the left side of the table. Group I metals lose one electron each. Ionisation Enthalpy decreases in groups from top to bottom. In the IA group, X represents Sodium (Na) and Y represents Caesium (Cs). Also, X is in the third period and Y is in the sixth.
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संबंधित प्रश्न
Give a reason for Ionisation potential increases across a period, from left to right
Define the term ‘ionisation potential`.
State the trends in ionization energy across the period.
What is meant by ionization potential?
State whether the ionization potential increases or decreases on going down a group.
Fill in the blank from the choices given below
Across a period, the ionisation potential ____________.
Fill in the blank from the choice given in bracket.
The energy required to remove on electron from a natural isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________
Arrange the following as per the instruction given in the bracket:
Potassium, Lithium, Sodium (increasing order of ionization potential).
Arrange the following as per instruction given in the bracket.
Na, Mg, Cl, S, Si (increasing ionisation potential)
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?
