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Mendeleev arranged elements in horizontal rows and  .

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Important Questions on The Periodic Table

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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 5
Second period of modern periodic table has 8 elements which is called _____.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 8
Boron is _____ than beryllium in size.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 10
_____ metals reacts rapidly with air to form oxides.
 
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 11
Which of the following is the correct set of elements to Dobereiner's triads?
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 12
Which of the following is correct?
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 13
Which of the following statements(s) about the modern periodic table are incorrect?
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 14
Which of the elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30, respectively belong to the same period?
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IMPORTANT
All In One ICSE Chemistry>Chapter 5 - The Periodic Table>EXAM PRACTICE>Q 15
In the modern periodic table, tungsten, W (atomic number = 74) is surrounded by the elements with atomic numbers 73, 42, 75, 106 Which of the following  will have physical and chemical properties similar to it?