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400BC
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∙ 14y ago
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Who discovered or created boron?
We don't know their name. Boron occurs naturally in the mineral borax, and has been used as a pottery glaze in China since around the year 300.
What is the origin of the name francium?
Francium is a chemical element, its atomic number is 87 and its symbol is Fr. It's a metal that is highly radioactive. It was discovered by French scientist Marguerite Perey in the year 1939. Perey worked at the Curie Institute in Paris, France, she first named the new element 'Actinium-K', later she proposed the name 'Catium', but after finding opposition to it, she proposed the name 'Francium', after France, the name was accepted in the year 1949 by the International Union of Pure and Applied Chemistry.
What is the Pantone Color Chart Color of the Year for the year 2013?
Each year, the Pantone Color company lists its "Color of the Year." In 2012, the color was tangerine tango. For the current year, the color of choice is emerald green.
What dose the Year AD mean?
it is the time of year.
What year was the hand sanitizer invented?
handsanitizer was invented in the year 1966 (this is the correct year i did a lot of research on it to be sure)
Explination of democritus model?
what year was the democritus model made?
What year did democritus make his atomic theory?
400b.C.
What year did democritus contribute to the atom?
442 BC
What year did democritus descover the atomic theory?
460 b.C.
What year did democritus discover his atomic theory?
460 b.C.
What year was democritus's invention made?
Democritus' last invention was made in 360 b.c. right before he died. I LOVE YOU<3 and i love my best friend in the whole world LOGAN G.
What year was the atom proposed?
The first atomic model was proposed by the Greek philosopher Democritus in 442 BC.
What year did democritus for one of the atomic theoris?
Approx. 400 years BCE; but now Leucippus is considered the founder of atomism.
Is Bella A 11 Year olds name?
yes, it doesn't really matter how old the person is.
What kind of Power steering fluid do i need for a 95 Chevy Silverado?
It does not matter on that year as long as it is a good name brand.
Does a year matter if you love him?
No. If you really love him, age does not matter.
Is Autumn a name?
Yes, I have heard of certain people in the paper and things called Autumn, but I suppose it doesn't matter, you can call your kids anything! It is also the name of a season of the year.
