Kingdom of Saudi Arabia
Ministry of Higher Education
Preparatory Year Deanship
Work sheet (2)
Determine each of the following is metal , nonmetal or metalloid:
Properties
Metal
Nonmetal
Metalloid
Insulators
Good conductor for
electricity
Semiconductors
Brittle
Ductile
Malleable
Determine number of protons, electrons and neutrons:
Atom
45
21 Sc
55
25
Mn
52
24
Cr
protons
electrons
neutrons
𝟔𝟓
𝟐𝟗𝒄𝒖
Give an one example from the following set (
Cl , Ag+ ) for the following:
metal
nonmetal
cation
107
109
47
47
anion
1
Ag , Cu2+ , Na , F - , OH¯,
isotopes
Polyatomic
ions
Ag
Calculate the average atomic mass for the Rubidium which has two isotopes:
Isotope
85
Rb
87
Rb
Abundance
72.17 %
23.83 %
Mass
84.9118
86.9092
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What the formula of compound formed between
1) Iron (III) Fe 3+ and sulfide (S2-)
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2) Ammonium (NH4)+ and phosphate (po4)3.....................................................................................................................................
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3) Tin ( Sn+2 ) and oxide ( O-2 )
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4) Manganese (Mn+4 ) and oxide (O-2 )
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2
5) Cu+1 and O-2
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6) Cu+2 and O-2
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7) 𝑁𝐻4+ 𝑎𝑛𝑑 𝑆𝑂3−2
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3
write the name of each the following compound:
1)
2)
𝐹𝑒2 𝑂3
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Cu SO4 . 6 H2O
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3) KCl :
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4) NF3 :
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5) MgSO4 . 7H2O :
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6) CaO :
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7) CS2 :
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8) Na2CO3∙10H2O :
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9) NaBr :
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10)
PCl5 :
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Good luck
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