Download App

The Periodic Table — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYThe Periodic Table1 Mark
Question
Give reason:
Inert gases do not form compounds.
✓

Answer

Inert gases have 2 or 8 electrons (duplet/octet) in their outermost orbit. That is their electronic arrangement is very stable, so they are unreactive and do not form compounds.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[1 Mark Question Answer]" from The Periodic Table→The Periodic Table — all question types→CHEMISTRY STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
→
State the following:
STP conditions
→
Give the general group study of hydrogen with reference to
burning
→
Give an example of the following chemical change.
Two gases combine to form white solid
→
State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.
$PbO+ CO\rightarrow Pb+ CO_2$
→
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
→
Explain why:
If distilled water is kept in a sealed bottle for a long time, it leaves etchings on the surface of the glass.
→
State three major problems caused by water pollution to mankind and environment.
→
How is molecular motion related with temperature?
→
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
→