CBSE Class 11-science Answered
Q-1Among Li,Be,B.C.N.O.F,Ne identify and explain,
1.highest first ionisation energy
2.highest electro negativity
3.most reactive non metal.
Q-2WHAT IS FIRST AND SECOND IONISATION ENERGY AND WHY IS SECOND IONISATION ENERGY GREATER THAN THE FIRST?
Q-3WHICH OF THE FOLLOWING IS MORE ACIDIC
P2O5 OR SiO2
Asked by Natesan | 28 Sep, 2016, 07:52: PM
Expert Answer
Dear rajagopalll@yahoo.in
Thanks for asking us a question in Ask the Expert section of TopperLearning.com.
We cannot entertain more than 3 questions with subquestions in a single query. In case of multiple questions within a query, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.
Answer to your first query is given below:
The elements of the second period are given below:
|
Second period |
Li |
Be |
B |
C |
N |
O |
F |
Ne |
(i) As we move from left to right in a period, the ionisation energy increases. Therefore, the element with the highest ionisation energy is Ne.
(ii) As we move from left to right in a period, the electron accepting tendency i.e. electronegativity increases and decreases down the group. Hence, the element with the highest electronegativity is F.
(iii) The non-metal with higher electronegativity will be more reactive. Over here the most reactive non-metal is F.
Regards
Topperlearning Team.
Topperlearning Team.
Answered by Vaibhav Chavan | 30 Sep, 2016, 11:15: AM
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