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Titanium is a chemical element with the symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density, and high strength. Titanium is resistant to corrosion in sea water, aqua region, and chlorine. ... In its unalloyed condition, titanium is as strong as some steels, but less dense.

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Toxicity : Highly Poisonous at room temperature

Oxidation : Does not combine with oxygen

Compounds | The importance of fluorine lies largely in its compounds. Fluorite is used as a flux in refining iron. Cryolite is used in the production of aluminum

Corrosion : Highly corrosive gas

Reactivity with water : When mixed with water, it reacts explosively

Reactivity with Elements : Reacts with all the elements except helium, neon, and argon

Reactivity with heat : Heat resistant

Flammability : Flammable, having the ability to catch on fire

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Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As the most electronegative element, it is extremely reactive, as it reacts with all other elements, except for argon, neon, and helium.

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•It is light
•it is silver-white color
•it is hard
•it is a lustrous metal

•it has excellent strength

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·V alence. As is characteristic of transition elements, titanium has a variable valence and occurs commonly in the bi-, tri-, and tetra-valent states.

· Gases. The chemical reactivity of titanium is dependent upon temperature. The metal’s action with other substances proceeds more readily at elevated temperatures. This property is especially exemplified by the metal’s extreme reactivity to the gases of the atmosphere at high temperatures.

· The metal combines with oxygen to form a long series of oxides from TiO to Ti₇O₁₂, each of which exhibits a different hue and, at short time exposures, a rainbow-colored surface film is produced.

·The reactivity of titanium with nitrogen is similar to its action with oxygen where a yellow-brown scale is formed on the surface as the nitride. Nitrogen will diffuse into the lattice with a restricted depth of penetration. This property has been employed in the nitride casing of the metal.

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Titanium metal connects well with bone, so it has found surgical applications such as in joint replacements (especially hip joints) and tooth implants. The largest use of titanium is in the form of titanium(IV) oxide. It is extensively used as a pigment in house paint, artists' paint, plastics, enamels and paper.

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Position of TITANIUM in the periodic table 

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Position of TITANIUM in the periodic table 

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As a member of Group 4 (fourth column of the periodic table, in the transition metals), titanium is commonly found in an oxidation state of +4 (number of electrons it prefers to bond with). Titanium is naturally found in an oxide form. Due to its metallic properties, titanium has high boiling and melting points.

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Fluorine is the most reactive and the most electronegative of all the elements.

Color : It is a pale yellow, white or colourless gas.

Fluorescence : It can sometimes be fluorescent.

Solubility : In liquid form it is freely soluble in liquid oxygen and ozone.

Odor : Pungent.

Density : A density of 1.695 grams per liter, it is 1.3 times as dense as air.

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Fluorine is critical for the production of nuclear material for nuclear power plants and for the insulation of electric towers. Hydrogen fluoride, a compound of fluorine, is used to etch glass. Fluorine, like Teflon, is used to make plastics and is also important in dental health.

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Position of FLUORINE in the periodic table 

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Position of FLUORINE in the periodic table 

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Fluorine (F) is the first element in the Halogen group (group 17) in the periodic table. Its atomic number is 9 and its atomic weight is 19, and it's a gas at room temperature. It is the most electronegative element, given that it is the top element in the Halogen Group, and therefore is very reactive.