ICSE Class 10 Chemistry
Question 18 of 30
Periodic Table — Periodic Properties & Variation of Properties — Question 26
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Question Question 26
State how density and melting points of elements varies across a period and down a group.
(i) Density — Density of elements across a period increases gradually to maximum and then it decreases slightly. Down a group density of elements increases gradually.
(ii) Melting point — Across a period from left to right, melting point increase upto group 14(IV A) and then decreases. The melting point of metals decrease down the group. The melting point of non-metals increase going down a group