Download App

Modern Periodic Table and Periodic Properties — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryModern Periodic Table and Periodic Properties3 Marks
Question
(a) (i) Name one most metallic element in the Periodic Table.
(ii) Name one most non-metallic element in the Periodic Table.
(b) How does electronegativity vary (i) in a period (ii) in a group?
✓

Answer

(a) (i) Francium is most metallic element.
(ii) Fluorine is most non-metallic element.
(b) (i) Electronegativity increases from left to right in a period.
(ii) Electronegativity decreases from top to bottom in a group.

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 "[3 Mark Question Answer]" from Modern Periodic Table and Periodic Properties→Modern Periodic Table and Periodic Properties — all question types→Chemistry STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

How is electrolytic dissociation different from thermal dissociation?
→
Distinguish between a common acid base indicator and a universal indicator.
→
What are the important precautions?
→
The following Question refer to the electrolysis of copper sulphate solution with copper electrodes:
(a) Compare the change in mass of the anode
(b) What is seen to happen to the colour of the copper sulphate solution if platinum electrodes are used? Explain the observation.
(c) What is the practical application of the electrolysis of copper sulphate solution? Briefly, describe one such application.
→
LPG has $60 \%$ propane and $40 \%$ butane: $10$ litres of this mixture is burnt. Calculate the volume of carbon dioxide added to atmosphere.
$C _3 H _8+5 O _2 \rightarrow 3 CO _2+4 H _2 O$
$2 C _4 H _{10}+13 O _2 \rightarrow 8 CO _2+10 H _2 O$
→
Distinguish between drying and dehydrating agent.
→
Define the following terms giving one example in each case (i) An acid (ii) A base (iii) An acid salt.
→
The given set up in the figure is for the preparation of an acid.

(a) Name the acid prepared by this method.
(b) name the reactants used.
(c) why empty flask is used
(d) what is the drying agent used? Why is this drying agent chosen?
(e) what is the role of the inverted funnel in the arrangement
→
State your observation when:
Zinc chloride solution, zinc nitrate solution, and zinc sulphate solutions are added individually to
(i)Barium chloride solution
(ii)Lead nitrate solution.
→
Find the empirical formula of the compounds with the following percentage compositi
Find the empirical formula of the compounds with the following percentage composition:
$
P b=62.5 \%, N=8.5 \%, O=29.0 \%
$
on:
$
Pb =62.5 \%, N =8.5 \%, O =29.0 \%
$
→