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1)Most metals have better electrical conductivity than non-metals.
2)Most period four elements have good electrical conductivity

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1) The metals have higher conductivity , the lower thermal conductivity for no-metals
2) In the beginning, the thermal conductivity it starts to go up, then after copper it goes down.

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For Metal side, the melting point is decreasing. When it gets to the middle part (transitional metal) the trend starts to get random. Then when it get to the non-metal, the melting point starts to increase again from the top to the bottom of the group.

Period 4
The melting point of period four increases till it reaches Vanadium then it becomes random from Chromium to Gallium. Then it starts decreasing from Germanium to
the rest of the element in period 4.

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Metals are harder
It gets harder every time until Chromium and then decreases.

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The further down the group you go the denser the elements get. Non-metals are a lot less dense than metals. Period 4: as you move right the denser it becomes however it starts going down at zinc.

# data[].attributes.body
Hardness

Lithium | 0.6MPa
Sodium | 0.5MPa
Potassium 0.4MPa
Rubidium | 0.3MPa
Cesium | 0.2MPa
Francium | N/A
Beryllium | 5.5MPa
Magnesium | 2.5MPa
Calcium | 1.75MPa
Strontium | 1.5MPa
Barium | 1.25MPa
Radium | N/A

# data[].attributes.body
Zinc/ 116 W/(m·K)

At first it increases, then it decreases, but then increases then lastly starts to increase.

# data[].attributes.body
Lithium | 0.6MPa
Beryllium | 5.5MPa
Magnesium | 2.5MPa
Potassium 0.4MPa
Calcium | 1.75MPa
Rubidium | 0.3MPa
Strontium | 1.5MPa
Cesium | 0.2MPa
Barium | 1.25MPa
Francium | N/A
Radium | N/A

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Thermal Conductivity

Nitrogen: 0.0234 W/ (m K)

Phosphorus: 0.236 W/(m K)

Arsenic: 50 W/ (m K)

Antimony: 24 W/ (m K)

Bismuth: 7.97 W/ (m K)

Oxygen: 0.0238 W/ (m K)

Sulphur: 0.205 W/ (m K)

Selenium: 0.519 W/(m·K)

Tellurium: 1.97–3.38 W/(m·K)

Polonium: 20 W/(m·K)

# data[].attributes.body
Nitrogen: -210 °C
Oxygen: -218.8 °C
Phosphorus: 44.2 °C
Sulphur: 115.2 °C
Arsenic: 816.8 °C
Selenium: 220.8 °C
Antimony:  630.6 °C
Tellurium: 449.5 °C
Bismuth: 271.4 °C
Polonium: 253.8 °C

# data[].attributes.body
Scandium | N/A |
Titanium | 6.MPa |
Vanadium | 7.MPa | Chromium | 8.5MPa |
Manganese | 6.MPa |
Iron | 4.MPa
Cobalt | 5.MPa |
Nickel | 4.MPa |
Copper | 3.MPa |
Zinc | 2.5MPa

The elements are increasing from Titanium until Chromium. From Chromium it start decreasing

# data[].attributes.body
Scandium- 1.5 x 106 S m-1
Titanium-2.5×106 S/m
Vanadium-5×106 S/m
Chromium-7.9×106 S/m
Manganese-6.2×105 S/m
Iron-1×107 S/m
Cobalt-1.7×107 S/m
Nickel-1.4×107 S/m
Copper-5.9×107 S/m
Zinc-1.7×107 S/m
pattern: generally increasing

# data[].attributes.body
Nitrogen:25.83×10−3 W/(m·K)
Oxygen:26.58×10−3  W/(m·K)
Phosphorus:white: 0.236 W/(m·K)
black: 12.1 W/(m·K)
Sulfur:0.205 W/(m·K) (amorphous)
Selenium:amorphous: 0.519 W/(m·K)
Arsenic:50.2 W/(m·K)
Antimony:24.4 W/(m·K)
Tellurium:1.97–3.38 W/(m·K)
Bismuth:7.97 W/(m·K)
Polonium:20 W/(m·K) (?)

# data[].attributes.body
Nitrogen: N/A
Phosphorus:1×107 S/m
Arsenic:3.3×106 S/m
Antimony:2.5×106 S/m
Bismuth:7.7×105 S/m
Oxygen: N/A
Sulfur: 1×10-15 S/m
Selenium:N/A
Tellurium:1×104 S/m
Polonium:2.3×106 S/m

# data[].attributes.body
Hydrogen: N/A
lithium:1.1×107 S/m
sodium:2.1×107 S/m
potassium:1.4×107 S/m
Rubidium:8.3×106 S/m
Cesium:5×106 S/m
Francium:N/A
Beryllium:
Magnesium:2.3×107 S/m
Calcium:
2.9×107 S/m

Strontium:7.7×106 S/m
Barium:2.9×106 S/m
Radium:

# data[].attributes.body
Nitrogen: N/A
Phosphorus: N/A
Arsenic: 3.5MPa
Antimony: 3.MPa
Bismuth: 2.25MPa
Oxygen: N/A
Sulphur: 2.MPa
Selenium: 2.MPa
Tellurium: 2.25MPa
Polonium: N/A

# data[].attributes.body
Group 1
Hydrogen (H)- -259.2 (C)
Lithium (Li)- 180.5 (C)
Sodium (Na)- 97.79 (C)
Potassium (K)- 63.5 (C)
Rubidium (Rb)- 39.48 (C)
Caesium (Cs)- 28.44 (C)
Francium (Fr)- 27 (C)

Group 2
Berylium (Be)- 1287 (C)
Magnesium (Mg)- 650 (C)
Calcium (Ca)- 842 (C)
Strontium (Sr)- 768.8 (C)
Barium (Ba)- 727 (C)
Radium (Ra)- 700 (C)

Trend: The melting point of group one falls from 180.5 to 27 (C) except for Hydrogen who started out negative. The melting point of group 2 decreases then rises then decreases.

# data[].attributes.body
Hydrogen (H) - 0.08988 g/L
Lithium (Li) - 0.534 g/cm3
Sodium (Na) - 968 kg/m³
Potassium (K) - 0.89 g/cm3
Rubidium (Rb) - 1.532 g/cm3
Caesium (Cs) - 1.93 g/cm3
Francium (Fr) -  2.8–3.0 g/cm3
Beryllium (Be) - 1.85 g/cm3
Magnesium (Mg) - 1.738 g/cm3
Calcium (Ca) - 1.54 g/cm3
Strontium (Sr) - 2.64 g/cm3
Barium (Ba) - 4.5 g·cm−3
Radium (Ra) - 5.5 g/cm3

Trend
It gets denser the further you go down the column

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Group VII
- Fluorine: N/A
- Chlorine: 0.01 S/m
- Bromine:1×10^-10 S/m
- Iodine:1×10^-7 S/m
- Astatine:N/A
Group 0
- Helium:N/A
- Neon:N/A
- Argon:N/A
- Krypton:N/A
- Xenon:N/A
- Radon: N/A

Conclusion:  Most parts of group VII and 0  cannot be measured. Chlorine has the best electrical conductivity and bromine has the worst.

# data[].attributes.body
Nitrogen: 1.251 g/L
Oxygen: 1.429 g/L
Phosphorus: 1.823 g/cubic cm
Sulfur: 2.07 g/cubic cm
Arsenic: 5.727 g/cubic cm
Selenium: 4.81 g/cubic cm
Antimony: 6.697 g/cubic cm
Tellurium: 6.24 g/cubic cm
Bismuth: 9.78 g/cubic cm
Polonium: 9.196 g/cubic cm for alpha; 9.398 g/cubic cm for beta
It gets denser as you go farther and farther down the group and the periodic table. Some have alpha and betas.

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BORON
27 W/(m K)
Aluminium
235 W/(m K)
Galium
29 W/(m K)
Indium
82 W/(m K)
Thalium
46 W/(m K)
Carbon
140 W/(m K)
Silicon
150 W/(m K)
Germanium
60 W/(m K)
Tin
67 W/(m K)
Lead
35 W/(m K)

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Group VII
Fluorine-1.696 g/L
Chlorine-3.2 g/L
Bromine-3.1 g/cm-3
Iodine-4.93 g/cm-3
Astatine-7 g/cm 3
Group 0
Helium-0.164 kg/m3
Neon-0.9002 g/L
Argon-1.784 g/L
Krypton-3.749 g/L
Xenon-5.894 g/L
Radon-9.73 g/L
The further down the  you go the more dense it is.

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Group 7
Fluorine: 0.0277 W m-1 K-1
Chlorine: 8.9×10−3 W/(m·K)
Bromine: 0.12 W/(m K)
Iodine:  0.449 W/(m K)
Astatine: 2 W/(m K)
Group 0
Helium: 151.3 m W/(m-K)
Neon: 49.1×10−3 W/(m·K)
Argon:  17.72 m W/(m-K)
Krypton:  9.43×10−3 W/(m·K)
Xenon: 5.65×10−3 W/(m·K)
Radon:  3.61×10−3 W/(m·K)

Conclusion: the higher the more conductivity it has

# data[].attributes.body
Helium: N/A
Neon: N/A
Argon: N/A
Krypton: N/A
Xenon: N/A
Radon: N/A
Fluorine: N/A
Chlorine: N/A
Bromine: N/A
Iodine: N/A
Astatine: N/A

Conclusion: Elements in Group VII and 0 cannot be measured on its hardness since its mostly

# data[].attributes.body
Group III & IV
σ (S/m) at 20 °C
Conductivity
Boron:
0.0001
Aluminium:
3.5×107
Gallium:
7.1×106
Indium:
1.2×107
Thallium
6.7×106
Carbon(Diamond):
~10−13
Carbon(graphite):
2 to 3×105 //basal plane
3.3×102 ⊥basal plane
Silicon:
1.56×10−3
Germanium:
2.17
Tin:
9.17×106
Lead:
4.55×106

# data[].attributes.body
1) Julia
2) Raphael
3) Will
4)Dominique
5) Gilbert

# data[].attributes.body
Boron: 9.5
Aluminium: 2-2.9
Gallium: 1.5
Indium: 1.2
Thallium: N/A
Carbon: 10.0
Silicon: 7.0
Germanium:N/A
Tin: 1.5-1.8
Lead: 1.5

# data[].attributes.body
Column 3:
Boron: 2076 C
Aluminium: 660.3 C
Gallium: 29.76 C
Indium: 156.6 C
Thallium: 303.8 C
Column 4:
Carbon (graphite): 3550 C
Carbon (diamond): 4726.85
C
Silicon: 1414 C
Germanium: 938.2 C
Tin: 231.9 C
Lead: 327.5 C
No pattern

# data[].attributes.body
Rachel, Lesley, Ashley, Isaiah, Danny
1) Melting Point
-Scandium/ 1,541 °C
-Titanium/ 1,668 °C
-Vanadium/ 1,910 °C
-Chromium/ 1,907 °C
-Manganese/ 1,246 °C
-Iron/ 1,538 °C
-Cobalt/ 1,495 °C
-Nickel/ 1,455 °C
-Copper/ 1,085 °C
-Zinc/  419.5 °C
Trend: The melting Point of the Transition Metal starts out at 1541°C and rises up than falls down till 429.5

# data[].attributes.body
Scandium (Sc) - 2985 kg/m³
Titanium (Ti) - 4507 kg/m³
Vanadium (V) - 6110 kg/m³
Chromium (Cr) - 7140 kg/m³
Manganese (Mn) - 7470 kg/m³
Iron (Fe) - 7874 kg/m³
Cobalt (Co) - 8900 kg/m³
Nickel (Nl)- 8908 kg/m³
Copper (Cu) - 8920 kg/m³
Zinc (Zn) - 7140 kg/m³

Starts becoming denser, starts becoming less dense at Copper

Yttrium (Y) - 4472 kg/m³
Zirconium (Zr) - 6511 kg/m³
Niobium (Nb) - 8570 kg/m³
Molybdenum (Mo) - 10280 kg/m³
Technetium (Tc) - 11500 kg/m³
Ruthenium (Ru) - 12370 kg/m³
Rhodium (Rh) - 12450 kg/m³
Palladium (Pd) - 12023 kg/m³
Silver (Ag) - 10490 kg/m³
Cadmium (Cd) -  8650 kg/m³
Hafnium (Hf) - 13310 kg/m³
Tantalum (Ta) - 16650 kg/m³
Tungsten (W) - 19250 kg/m³
Rhenium (Re) - 21020 kg/m³
Osmium (Os) - 22610 kg/m³
Iridium (Ir) - 22650 kg/m³
Platinum (Pt) - 21090 kg/m³
Gold (Au) - 19300 kg/m³
Mercury (Hg) - 13534 kg/m³
Rutherfordium (Rf) - Unknown
Dubnium (Db) - Unknown
Seaborgium (Sg) - Unknown
Bohrium (Bh) - Unknown
Hassium (Hs) - Unknown
Meiternium (Mt) - Unknown
Darmstadtium (Ds) - Unknown
Roentgenium (Rg) - Unknown
Copernicium (Cn) - Unknown

# data[].attributes.body
Caleb, Owen, Christina, Andrew, Steven

# data[].attributes.body
(Ashley R., Mitchell, Isaac, Winnie, Megan)
Melting Point
Group VII
- Fluorine: -219.67 (C)
- Chlorine: -101.5 (C)
- Bromine: -7.2 (C)
- Iodine: 113.7 (C)
- Astatine: 302 (C)
Group 0
- Helium: -270.3(C)
- Neon: -248.59 (C)
- Argon: -189.34 (C)
- Krypton: -157.37 (C)
- Xenon: -111.75 (C)
- Radon:  -71 (C)
Conclusion:  The further you go down the group, higher the melting point will be.

# data[].attributes.body
Density

-Boron (B):2.37g/cm3

-Aluminum (Al):2.70g/cm3
-Gallium (Ga):5.91g/cm3
-Indium (In):7.31g/cm3
-Thalium (Tl):11.85g/cm3
-Carbon (C) diamond :3.51g/cm3
Carbon (graphite): 2.266g/cm3
-Silicon (Sl):2.3296g/cm3
-Germanium (Ge):around 5.5g/cm3
-Tin (Sn):7.31g.cm3
-Lead (Pb):11.34g/cm3
Trend: The farther down the element is, the greater the density.