elements hydrogen number of: protons 1 neutrons 0 electrons 1 boiling point -252 freezing point -259...
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Elements
Hydrogen
Number of:
Protons 1
Neutrons 0
Electrons 1
Boiling point -252
Freezing point -259
State at room temperature gas
Elements
Helium
Number of:
Protons 2
Neutrons 2
Electrons 2
Boiling point -268
Freezing point -272
State at room temperature gas
Elements
Lithium
Brief description: lithium is a Group 1 element Group 1 elements are called "alkali metals". Lithium is a solid only about half as dense as water and lithium metal is the least dense metal. A freshly cut chunk of lithium is silvery, but tarnishes in a minute or so in air to give a grey surface. Lithium is mixed (alloyed) with aluminium and magnesium for light-weight alloys, and is also used in batteries, some greases, some glasses, and in medicine.
Number of:
Protons 3
Neutrons 4
Electrons 3
Boiling point 1347
Freezing point 180
State at room temperature solid
Elements
Boron
Brief description: boron is a Group 3 element that has properties which are borderline between metals and non-metals (semi metallic). It is a semiconductor rather than a metallic conductor. Chemically it is closer to silicon than to aluminium, gallium, indium, and thallium.
Number of:
Protons 5
Neutrons 5
Electrons 5
Boiling point 2550
Freezing point 2300
State at room temperature solid
Elements
Carbon
Number of:
Protons 6
Neutrons 6
Electrons 6
Boiling point 3440
Freezing point 4827
State at room temperature solid
Brief description: carbon is a Group 4 element and is distributed very widely in nature. It is found in abundance in the sun, stars, comets, and atmospheres of most planets.Carbon is found free in nature in three allotropic forms: amorphous, graphite, and diamond. Graphite is one of the softest known materials while diamond is one of the hardest.
Elements
Oxygen
Number of:
Protons 8
Neutrons 8
Electrons 8
Boiling point -182
Freezing point - 218
State at room temperature gas
Brief description: oxygen is a Group 6 element. While about one fifth of the atmosphere is oxygen gas, the atmosphere of Mars contains only about 0.15% oxygen. Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, one process responsible for stellar energy production. About two thirds of the human body, and nine tenths of water, is oxygen. The gas is colourless, odourless, and tasteless. Liquid and solid oxygen are pale blue.
Elements
Fluorine Number of:
Protons 9
Neutrons 10
Electrons 9
Boiling point -188
Freezing point - 219
State at room temperature gas
Brief description: fluorine is a Group 7 element. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all substances.
Elements
Sodium Number of:
Protons 11
Neutrons 12
Electrons 11
Boiling point 882
Freezing point 97
State at room temperature solid
Brief description: sodium is a Group 1 element which are often referred to as the "alkali metals". Sodium salts impart a characteristic orange/yellow colour to flames and orange street lighting is orange because of the presence of sodium in the lamp.Soap is generally a sodium salt of fatty acids. The most common compound is sodium chloride, (table salt).
Elements
Magnesium Number of:
Protons 12
Neutrons 12
Electrons 12
Boiling point 1090
Freezing point 648
State at room temperature solid
Brief description: magnesium is a greyish-white, fairly tough metal. Magnesium is the eighth most abundant element in the earth's crust although not found in it's elemental form. It is a Group 2 element Group 2 elements are called alkaline earth metals. Magnesium metal burns with a very bright light.Magnesium is an important element for plant and animal life.
Elements
Potassium Number of:
Protons 19
Neutrons 20
Electrons 19
Boiling point 774
Freezing point 63
State at room temperature solid
Brief description: potassium is a metal and is the seventh most abundant and makes up about 1.5 % by weight of the earth's crust. Potassium is an essential constituent for plant growth and it is found in most soils. It is one of the most reactive of metals and, apart from lithium, it is the least dense known metal. It is soft and easily cut with a knife. It is silvery in appearance immediately after a fresh surface is exposed..
Elements
Iron Number of:
Protons 26
Neutrons 30
Electrons 26
Boiling point 2750
Freezing point 1535
State at room temperature solid
Elements
Copper Number of:
Protons 29
Neutrons 35
Electrons 29
Boiling point 2567
Freezing point 1083
State at room temperature solid
Copper is reddish with a bright metallic colour. It is malleable, ductile, and a good conductor of heat and electricity (second only to silver in electrical conductivity).
Elements
ZincNumber of:
Protons 30
Neutrons 35
Electrons 30
Boiling point 907
Freezing point 419
State at room temperature solid
Elements
Nitrogen Number of:
Protons 7
Neutrons 7
Electrons 7
Boiling point -209
Freezing point -195
State at room temperature gas
Brief description: Nitrogen is a Group 5 element and makes up about 78% of the atmosphere.