How many elements are there name till 20 element
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still now there are 118 elements
and 26 or manmade and 88 are free stable
20 elements:
hydrogen-H
helium-He
lithium-Li
beryllium-Be
Boron-B
carbon-C
nitrogen-N
oxygen-O
fluorine-F
neon-Ne
sodium-Na
magnesium-Mg
aluminium-Al
silicon-Si
phosphorus-P
sulphur-S
chlorine-Cl
argon-Ar
potassium-K
calcium-Ca
and 26 or manmade and 88 are free stable
20 elements:
hydrogen-H
helium-He
lithium-Li
beryllium-Be
Boron-B
carbon-C
nitrogen-N
oxygen-O
fluorine-F
neon-Ne
sodium-Na
magnesium-Mg
aluminium-Al
silicon-Si
phosphorus-P
sulphur-S
chlorine-Cl
argon-Ar
potassium-K
calcium-Ca
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