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Chapter 4

1. Sodium Na and Chloine Cl are both in Period 3 of Periodic Table. Explain which on eismore electronegatie and wh!.

". #luminium has an tomic radius of $.1"% nm and sulphur has an atomic radius of $.1$4

nm. &oth are in Period 3 of Periodic Table. Explain the difference in atomic radius.

3. Silicon boiling point' "3%% $C

Sulphur boiling point' 44% $C

Explain wh! both hae the mar(ed difference of boiling point.

4. )ie one example of amphoteric oxide.*h! is difference between amphoteric oxide compared to acidic+basic oxides,

%.

-on ormula Color

Permanganate-ron /--0

Copper /--0

Chromate

ichromate

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2. ill in the blan(

Name of process eaction Catal!st

aber process N"5 "667 "N3

"S8"5 8"667 "S83 9anadium oxide 9"8%

:anufacture of margarine !drogenation of margarine

8stwald process :anufacture of nitric acid

;. # student was gien an un(nown solution containing transition element. *hen he addsa

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Chapter %

1. )ie an example each for compound with ionic bond and coalent bond. raw the

structure.Explain wh! the boiling and melting points for the ionic compound is generall! higher.

".

Proton number Element

; >

1 ?

-. Predict the t!pe of compound formed between > and ?

--. )ie the formula.

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Chapter 2

1. # chemistr! student carries out an electrol!sis process using copper as electrode=

copper sulphate solution as electrol!te..-. Explain what would happen at anode and cathode= with explanation using half

e

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4. )ie the test for

#. 8x!gen gas&. Carbon dioxide gas

C. !drogen gas

%. )ie one adantage and one disaantage of lead6acid accumulator

2. Electrol!sis conerts AAAAAAAAAAAAAAA energ! to AAAAAAAAAAAAAAAA energ!.9oltaic cell conerts AAAAAAAAAAAAAAA energ! to AAAAAAAAAAAAAAAA energ!.

;. Consruct a oltaic cell using :g+Cu electrode. *rite the half e