Q.
Who many elements exists
Tags:
elements
Asked by adseh shingavi,
18 Feb '08 07:08 pm
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Answers (3)
1.
The current total is now around 112. The ones up through atomic number 92 (uranium) are naturally occurring, whereas the "transuranic" elements are synthesized in experiments wherein heavy nuclei are made to interact with each other.
Answered by GOPI KUMAR, 18 Feb '08 07:10 pm
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2.
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3.
Name Symbol Atomic Number Atomic Mass Group Period
Actinium Ac 89 [227][1] 7
Aluminium (Aluminum) Al 13 26.9815386(8) 13 3
Americium Am 95 [243][1] 7
Antimony (Stibium) Sb 51 121.760(1)[2] 15 5
Argon Ar 18 39.948(1)[2] [3] 18 3
Arsenic As 33 74.92160(2) 15 4
Astatine At 85 [210][1] 17 6
Barium Ba 56 137.327(7) 2 6
Berkelium Bk 97 [247][1] 7 ...more
Answered by Sorishti Marwha, 18 Feb '08 07:29 pm
Actinium Ac 89 [227][1] 7
Aluminium (Aluminum) Al 13 26.9815386(8) 13 3
Americium Am 95 [243][1] 7
Antimony (Stibium) Sb 51 121.760(1)[2] 15 5
Argon Ar 18 39.948(1)[2] [3] 18 3
Arsenic As 33 74.92160(2) 15 4
Astatine At 85 [210][1] 17 6
Barium Ba 56 137.327(7) 2 6
Berkelium Bk 97 [247][1] 7 ...more
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