First ionisation enthalpy of two elements X and Y are 500kJ/mol and 375kJ/mol respectively.Comment about their relative position in a group as well as in a period.
Asked by rickykumar00001 | 11th Jun, 2015, 01:32: PM
Across a period:
The ionisation energy tends to increase as one moves from left to right across a period.
Since Y has a lower value than X, it will appear to the left of the periodic table and X will appear to the right of the periodic table.
Down a group:
Ionisation energy decreases with an increase in the atomic size i.e. it decreases as one moves down the group.
Therefore X with a higher value than Y will appear at the upper part of the periodic table and Y will appear at the lower part of the periodic table.
Answered by Vaibhav Chavan | 11th Jun, 2015, 06:32: PM
- Arrange the following in the decreasing order of metallic character: Argon,Silicon,Aluminium,Sodium.
- GIVE REASON 1 The most metallic element is found at the bottom of a group. 2 1st element in a group is highly non metallic. PLEASE ANSWER IT
- what is the meaning of neutral isolated gaseous atom
- Can hydrogen be a halogen?
- name a non metal with valency 3
- Give reason Alkali metals are good reducing agents
- In period 2 element A is to the right of element B. 1. The element A would probably have a (smaller/larger)atomic size than B.
- Explain why are the following statements not correct : (1)All groups contain metals and non-metals. (2)Atoms of elements in the same group have the same number of electron(s). (3)Non-metallic character decreases across a period with increase in atomic number. (4)Reactivity increases with atomic number in a group as well as in a period.
- Q. 2
- Q. 2
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number