Answer available
Class 9 · Chemistry · The Periodic Table
How many periods and groups are there in the modern periodic table, and what does the period number of an element tell you?
3 marksMediumShort answer
Class 9 · ICSE · Chemistry
The Periodic Table
Mendeleev's and the modern periodic table, periods, groups and periodicity.
- Questions
- 6
- PYQs
- 0
- Topics
- 0
Syllabus mapping: ICSE syllabus (CISCE)
Questions
6 questions in this chapter.
- Answer available
Class 9 · Chemistry · The Periodic Table
An element X has an atomic number of 16. Write its electronic configuration, its group and period, and the formula of its compound with hydrogen.
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · The Periodic Table
State two advantages of the modern periodic table over Mendeleev's table.
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · The Periodic Table
State three achievements and two defects of Mendeleev's periodic table.
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · The Periodic Table
State Mendeleev's periodic law and the modern periodic law, and say why the law was changed.
2 marksEasyShort answer
- Answer available
Class 9 · Chemistry · The Periodic Table
An element has the electronic configuration 2, 8, 8, 2. State its atomic number, period and group.
3 marksMediumNumerical