who ever answer it I will mark him the brainlist
1.Write the definition of
(i)symbol
(ii)valency
(iii) radicals
(iv)compounds. (v)
chemical equations.
2.Write the symbol and valency of all the metals , non metals and metalloids.
3.Write the name and formula of the all the basic and acid radicals having
valency 1 ,2 ,3 and 4
4.Write the chemical name and formula of 50 compounds .
please answer correctly
Answers
Answer:
1
a) a symbol is an abbreviation for a chemical element. Symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised
b) a measurement of the power of an atom to combine with others, by the number of hydrogen atoms it can combine with or take the place of
c) something that consists of two or more things or substances combined together
d) A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae
2. METALS
Sodium
Symbol: NaValency: 1
Silver
Symbol: AgValency: 1
Potassium
Symbol: KValency: 1
Lithium
Symbol: LiValency: 1
Calcium
Symbol: Ca Valency: 2
Copper
Symbol: Cu Valency: 1 or 2
Zinc
Symbol: Zn Valency: 2
Magnesium
Symbol: MgValency: 2
Barium
Symbol: BaValency: 2
Aluminium
Symbol: AlValency: 3
Nickel
Symbol: NiValency: 2
Iron
Symbol: FeValency: 2 or 3
Lead
Symbol: PbValency: 2 or 4
Tin
Symbol: SnValency: 2 or 4
NON- METALS
1. Carbon (C) - 4
2. Nitrogen (Ni) - 5
3.Oxygen (O) - 6
4. Phosphorus (P) - 5
5. Sulfur (S) - 6
6. Selenium (Se) - 6
7. Iodine (I) - 7
8. Chlorine (Cl) - 7
9. Fluorine (F) - 7
10. Bromine (Br) - 7
3. PHOTO IS THE ANSWER OF THIS QUESTION
4.
1 Acetaldehyde
C2H4O 44.053 0-30% (18°C)
2 Acetamide
C2H5NO 59.068 0-6% (15°C)
3 Acetic acid
CH3COOH 60.052 0-100% (20°C)
4 Acetone
C3H6O 58.080 0-100% (20°C)
5 Acetonitrile
C2H3N 41.053 0-16% (15°C)
6 Aluminium chloride
AlCl3 133.33 0-40% (15°C)
7 Aluminium nitrate
Al(NO3)3 212.994 -
8 Aluminium sulfate
Al2(SO4)3 342.132 0-26% (15°C)
9 Ammonia
NH3 17.031 0-30% (20°C)
10 Ammonium acetate
CH3COONH4 77.083 0-45% (25°C)
11 Ammonium carbonate
(NH4)2CO3 96.086 -
12 Ammonium chloride
NH4Cl 53.49 0-24% (20°C)
13 Ammonium dichromate
(NH4)2Cr2O7 252.063 0-20% (12°C)
14 Ammonium hydroxide
NH4OH 35.046 0-62% (20°C)
15 Ammonium nitrate
NH4NO3 80.043 0-50% (20°C)
16 Ammonium oxalate
(NH4)2C2O4 124.096 -
17 Ammonium sulfate
(NH4)2SO4 132.13 0-50% (20°C)
18 Antimony(III) chloride
SbCl3 228.11 -
19 Antimony(V) chloride
SbCl5 299.01 -
20 Barium chloride
BaCl2 208.23 0-26% (20°C)
21 Barium hydroxide
Ba(OH)2 171.34 -
22 Barium nitrate
Ba(NO3)2 261.34 -
23 Bismuth(III) chloride
BiCl3 315.33 -
24 Bismuth(III) nitrate
Bi(NO3)3 394.99 -
25 Butan-1-ol
C4H10O 74.123 0-8% (20°C)
26 Butyric acid
C4H8O2 88.106 0-62% (25°C)
27 Cadmium nitrate
Cd(NO3)2 236.42 0-50% (18°C)
28 Cadmium sulfate
CdSO4 208.47 -
29 Calcium chloride
CaCl2 110.98 0-40% (20°C)
30 Calcium hydroxide
Ca(OH)2 74.092 -
31 Calcium nitrate
Ca(NO3)2 164.086 0-68% (18°C)
32 Calcium sulfate
CaSO4 136.13 -
33 Carbon disulfide
CS2 76.13 -
34 Chloroacetic acid
C2H3ClO2 94.49 0-32% (20°C)
35 Chloroauric acid
HAuCl4 339.78 -
36 Chloroform
CHCl3 119.37 -
37 Chloroplatinic acid
H2PtCl6 409.80 -
38 Chromium(III) chloride
CrCl3 158.35 0-14% (18°C)
39 Chromium(III) nitrate
Cr(NO3)3 238.008 -
40 Chromium(III) sulfate
Cr2(SO4)3 392.16 0-40% (15°C)
41 Chromium(VI) oxide
CrO3 99.993 0-60% (15°C)
42 Citric acid
C6H8O7 192.123 0-55% (20°C)
43 Cobalt(II) nitrate
Co(NO3)2 182.941 -
44 Cobalt(II) sulfate
CoSO4 154.99 -
45 Copper(I) chloride
Cu2Cl2 197.99 0-20% (20°C)
46 Copper(II) chloride
CuCl2 134.45 0-20% (20°C)
47 Copper(II) nitrate
Cu(NO3)2 187.554 0-25% (20°C)
48 Copper(II) sulfate
CuSO4 159.60 0-20% (18°C)
49 Dichloroacetic acid
C2H2Cl2O2 128.94 0-30% (20°C)
50 Diethyl ether
(C2H5)2O 74.123 0-5% (20°C)
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