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How many elements had been discovered by 1959?
97 elements were known in 1950. Berkelium (Element 97) was discovered in December 1949.
How many years has helium been around?
Helium as an element has been around since fusion began in stars, but it was discovered in 1868
How many elements discovered in chlorine?
Chlorine has only one type of element and it is the element chlorine with 17 protons, 17 electrons.
How many elements are discovered till now?
117 Elements have been discovered.One more element has now been discovered bringing the total number now to 118 elements
What is the sentence for element?
Science has discovered many Element. Some of those element are very important for us.
How many elements had been discovered when Thomas Edison invented the electric light bulb in 1870?
78
What is an element and how many elements are there?
An element is a substance in which every atom is the same. There are 118, 112 of which have been discovered.
How many elements had been discovered by 1959?
97 elements were known in 1950. Berkelium (Element 97) was discovered in December 1949.
How many element had been discovered when Joseph paxton created the crystal palace in 1851?
49
How many years has helium been around?
Helium as an element has been around since fusion began in stars, but it was discovered in 1868
How many leap years since 1870?
From 1870 to 2011 there have been 34 leap years.
How many Mayan codices have been discovered?
how many Mayan codices have been discovered
Where was phosphurus discovered?
The Element, Phosphorus (symbol P) was isolated/discovered in Germany by Brandt in 1669.German Alchemists had been experimenting with various urine samples for many years but, Brandt is credited with the 'discovery.'
Who discovered the element mercury?
No one knows exactly when mercury was discovered, but many ancient civilizations were familiar with this element. It's ore is a dark red and known a cinnabar. When heated in a charcoal fire droplets of the metal appear on it's surface.
When was sickle cell anemia discovered?
Sickle cell anemia was discovered in the 1870's and carried many names, but 1922 it was officially named sickle cell anemia.
How many types of element are there in periodic table?
Three: nonmetals, semimetals (or metalloids), and metals.
What element was found after being on the sun for 27 years?
Helium. It was discovered on the Sun many years before it was discovered on Earth.
