valency of the 30 elements........
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Answer:
cline1−3AtomicNo.
\cline1−31
\cline1−32
\cline1−33
\cline1−34
\cline1−35
\cline1−36
\cline1−37
\cline1−38
\cline1−39
\cline1−310
\cline1−311
\cline1−312
\cline1−313
\cline1−314
\cline1−315
\cline1−316
\cline1−317
\cline1−318
\cline1−319
\cline1−320
\cline1−321
\cline1−322
\cline1−323
\cline1−324
\cline1−325
\cline1−326
\cline1−327
\cline1−328
\cline1−329
\cline1−330
\cline1−3
Elements
Hydrogen
Helium
Lithium
Berrylium
Boron
Carbon
Nitrogen
Oxygen
Flourine
Neon
Sodium
Magnesium
Aluminium
Silicon
Phosphorus
Sulphur
Chlorine
Argon
Potassium
Calcium
Scandium
Titanium
Vanadium
Chromium
Manganese
Iron
Nickel
Cobalt
Copper
Zinc
Valency
1
0
1
2
3
4
3
2
1
0
1
2
3
4
3
2
1
0
1
2
3
4
5,4
2
7,4,2
2,3
3,2
2
2,1
2