Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
Why do noble gases not usually take part in chemical reactions?
3 marksMediumShort answer
ICSE question bank
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9 questions
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
What is the octet rule, and which family of elements already obeys it?
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
Explain the formation of a molecule of sodium chloride, naming the type of bond formed.
3 marksMediumStructured
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
Name the three fundamental particles of an atom and give the charge and relative mass of each.
2 marksEasyShort answer
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
What are isotopes? Give one example and state why they have the same chemical properties.
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
An atom has an atomic number of 17 and a mass number of 35. Write its electronic configuration and state the number of neutrons.
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
An element has two isotopes of mass numbers 35 and 37 present in the ratio 3 : 1. Calculate its average atomic mass.
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
Explain the formation of a molecule of methane, naming the type of bond.
3 marksMediumStructured
- Answer available
Class 9 · Chemistry · Atomic Structure and Chemical Bonding
The number of neutrons in an atom of nitrogen-14 (atomic number 7) is:
2 marksEasyMCQ