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Some Elements Are Given in Their Own Symbol and Position in the Periodic Table - Chemistry

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In the above table, H does not represent hydrogen.Some elements are given in their own symbol and position in the periodic table while others are shown with a letter. With refrence to the table answer the following questions.
1. Identify the most electronegative element.
2. Identify the most reactive element of Group I.
3. Identify the element from Period 3 with least atomic size.
4. How many valence electrons are present in Q?
5. Which element from group 2 would have the least ionisation energy?
6. Identify the noble gas of the fourth period.
7. In the compound between A and H, what type of bond would be formed and give its molecular formula.

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  1. I
  2. R
  3. M
  4. 5
  5. T
  6. Y
  7. Ionic bond will be formed and the molecular formula is A2H. 
Concept: Periodic Properties and Variations of Properties:- Physical and Chemical
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Frank ICSE Class 10 Chemistry Part 2
Chapter 1 Periodic Properties And Variation Of Properties: Physical And Chemical
Exercise | Q 5 | Page 23
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