Twenty amazing facts 1. There are 62,000 miles of blood vessels in the human body – laid end to end they would circle the earth 2.5 times
2. At over 2000 kilometers long, The Great Barrier Reef is the largest living structure on Earth
3. The risk of being struck by a falling meteorite for a human is one occurrence every 9,300 years
4. A thimbleful of a neutron star would weigh over 100 million tons
5. A typical hurricane produces the energy equivalent of 8,000 one megaton bombs6. Blood sucking hookworms inhabit 700 million people worldwide
7. The highest speed ever achieved on a bicycle is 166.94 mph, by Fred Rompelberg
8. We can produce laser light a million times brighter than sunshine
9. 65% of those with autism are left handed
10. The combined length of the roots of a Finnish pine tree is over 30 miles11. The oceans contain enough salt to cover all the continents to a depth of nearly 500 feet
12. The interstellar gas cloud Sagittarius B contains a billion, billion, billion liters of alcohol [JFrater is planning to move there in the near future]
13. Polar Bears can run at 25 miles an hour and jump over 6 feet in the air
14. 60-65 million years ago dolphins and humans shared a common ancestor
15. Polar Bears are nearly undetectable by infrared cameras, due to their transparent fur16. The average person accidentally eats 430 bugs each year of their life
17. A single rye plant can spread up to 400 miles of roots underground
18. The temperature on the surface of Mercury exceeds 430 degrees C during the day, and, at night, plummets to minus 180 degrees centigrade
19. The evaporation from a large oak or beech tree is from ten to twenty-five gallons in twenty-four hours
20. Butterflies taste with their hind feet, and their taste sensation works on touch – this allows them to determine whether a leaf is edible
SKYPE ID:skamineni22
Have you ever wondered which elements are toxic? Everything is toxic if the dose is high enough, so I've compiled a short list of elements that have no nutritional value, even in trace amounts. Some of these elements accumulate in the body, so there is no truly safe exposure limit for those elements (e.g., lead, mercury). Barium and aluminum are examples of elements which can be excreted, at least to a certain extent. Most of these elements are metals. The man-made elements are radioactive and toxic whether they are metals or not. * Aluminum * Antimony * Arsenic (metalloid) * Barium * Beryllium * Cadmium * Hexavalent Chromium Cr6+ (Cr3+ is necessary in trace amounts for proper nutrition) * Lead * Mercury * Osmium * Thallium * Vanadium radioactive metals * Polonium (metalloid) * Thorium * Radium * Uranium * Transuranium elements (e.g., polonium, americium) * Radioactive isotopes of metals that might not otherwise be highly toxic (e.g., cobalt-60, strontium-90) 1) Largest atomic size - cesium
2)lowest atomic size - H
3)Largest Anion - At -
4)smallest anion - F -
5)Lowest electronegativity - Cs
6)Lowest electron affinity - noble gases
7)Metals having highest b.pt and m.pt. = mercury and tungsten
8)Non metal having highest m.pt and b.pt = Helium
9)Most reactive solid ekement - Li
10)Most reactive liquid element - Cs
11)Most reactive gaseous element - Flourine
12)Most stable element - Tellurium (half life = 2 * 1021 )
13)Electro-ive element next to flourine - Oxygen
14)Grp containing max. no. of gases - 18th
15)total no. of gaseous element in periodic table - 11
(H , He , N , O , F , Ne , Cl , Ar , Kr , Xe , Ra)
16)TOTAL NO. OF LIQUID elements - 6
(Ga , Br , Cs , Hg , Fr , EKa)
17)total no. of solid elements = 89 (can't name them here heheee)
18)Liquid radioactive element - Francium
19)N.metal wid highest M.Pt - Carbon
20)Metal wid highest valency = Plutonium
21)highest tensile strength - Boron
22)Most ionic compound = CsF
23)Strongest base = Cs (OH)
24)Strongest basic oxide = Cs2 O
25)Most conducting metal = Ag
26)insulating = Pb
27)Elements wich are amphoteric in nature = Al , Zn , An , Pb
28)N.METALS having ,metallic lusture = Iodine and Graphite
29)Naturally occuring heaviest element = uranium
30)most conducting N.metal - C
Give a thought
"Desire is the key to motivation, but it's the determination and commitment to an unrelenting pursuit of your goal - a commitment to excellence - that will enable you to attain the success you seek."
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