chem class(2may)
DESCRIPTION
TRANSCRIPT
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ELEMENTS IN A PERIOD
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PERIOD 3Naughty Man And Silly People Should Consume A lot of Kentucky Combo
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WRITE THE ELECTRON ARRANGEMENT OF PERIOD 3
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2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8
2.8.1 2.8.4 2.8.5 2.8.6 2.8.7 2.8.82.8.2 2.8.3
2.8.8.1 2.8.8.2
1 2
Group 1
Group2
Group 13
Group 14
Group 15
Group 16
Group 17
Group 18
Period 1
Period 2
Period 3
Period 4
1 2
3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18
19 20
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PERIOD 3
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ACROSS THE PERIOD 3…
1. Atomic size no.of proton in nucleus ↑ positive charge of nucleus ↑ force of attraction of nucleus on the electrons ↑2. Metal → metalloid → non-metal3. Conductivity .4. Electronegativity The atomic size ↓ Positive charge In nucleus ↑ The atom will easily accept electrons to achieve
octet electron arrangement.
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PROPERTIES Metal → metalloid → non-metal Oxide: basic → amphoteric → acidic
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Base
acid
amphoteric
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Each oxide will have
2 reactions
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Metal oxide (basic oxide) With water With acid
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Non- Metal (acidic oxide) With water With alkali
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AMPHOTERIC OXIDE
With acid With alkali
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TRANSITION METALS
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EXAMPLE OF TRANSITION METALS
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See That Volvo Company Manufactured First Class New Car Zoom!!
Sc Ti V Cr Mn Fe Co Ni Cu Znrou
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THE PHYSICAL PROPERTIES OF TRANSITION METALS.
Shiny surfaces Ductile and Malleable High melting point and boiling point High density Good conductor of heat and electricity.
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PROPERTIES OF TRANSITION METALS
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COLOR OF TRANSITION METALS
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Fe3+
Fe2+
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Cu2+
Ni2+
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USES OF TRANSITIONS METALS
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1 2
3
4
56789
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QUESTION 1: List all the elements in Group 3.
Ans: Na, Mg, Al, Si, P, S, Cl, Ar
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QUESTION 2: Describe the physical properties across
the Period. Ans: The atomic size decreases.(no.of proton
in nucleus ↑, positive charge of nucleus ↑, force of attraction of nucleus on the electrons ↑)
Metal → metalloid → non-metal Conductivity decreases.
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QUESTIONS 3 Describe the electronegativity of the
elements across the period 3.
Ans: Electronegativity ↑ The atomic size ↓ Positive charge In nucleus ↑ The atom will easily accept electrons to
achieve octet electron arrangement.
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QUESTION 4: State the oxide properties of the
elements across the period 3.
Ans: Oxide: basic → amphoteric → acidic
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QUESTION 5: Metal oxides react with _______ to form
salt and water.
Ans: acid
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QUESTION 6: Transition elements also called
as____________.
Ans: Transition metals
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QUESTION 8: One of the properties of transition
metals is form ions which are colored. What is the color of iron(II) and iron (II)?
Ans: Iron(II) – green Iron(III) - brown
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QUESTION 7: Describe the physical properties of
transition metals.
Ans: Shiny surfaces Ductile and Malleable High melting point and boiling point High density Good conductor of heat and electricity.
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QUESTION 9: Transition metals can acts as catalysts
in manufacturing the margarine. What is the transition metals used?
Ans: Nickel
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SUMMARY
Period 3 Transition metals
uses
Special properties
Physical
Changes and reaction in oxide
physical