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=unknown 1: silicon/unknown 2: neon/unknown 3: rubidium/unknown 4: krypton/unknown 5: gold/unknown 6: strontium/unknown 7: magnesium/unknown 8:cesium/unknown 9: thallium==are those the answers?=
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∙ 15y ago
Wiki User
∙ 7y agoThe four predicted elements lighter than the rare earth elements, ekaboron (Eb), ekaaluminium (Ea), ekamanganese (Em), and ekasilicon (Es), proved to be good predictors of the properties of scandium, gallium, technetium and germanium respectively, which each fill the spot in the Periodic Table assigned by Mendeleev.
Wiki User
∙ 14y agoOne was right below Silicon, which Mendeleev called Ekasilicon. It was later discovered to be Germanium.
Wiki User
∙ 11y agonoble gases and actinides
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Why was the warm water used in the 11 unknown solution lab?
The heat of the water acts as a catalysis. Basically this just speeds up the reaction!
What are elements that are made in lab called?
Synthetic is the term you are looking for i believe.
How would you use element in a sentence?
The run-down area attracted a certain shady element. A new element was discovered at the lab.
Which group I and group VII elements react together most vigorously?
Francium and Fluorine. They would react instantaneously and explosively. However, this would never be done in an open lab. , because francium is radio-active. However, Sodium (Grp (I)) and Chlorine (Grp(VII)), will react in a gas jar in the lab. But less vigorously than the above two.
How many known elements are there?
There are 118 elements know to man at this date. That is to say that man has created an atom which contains 118 protons, 118 neutrons, and 118 electrons. This fell apart as soon as it was created, as do most synthetic elements. There are only about 91 naturally occurring and semi-stable elements, the remaining 27 are scientifically lab founded..
What is the unknown metal in the AP Chemistry Heat Effects and Calorimetry Lab?
that is supposed to be unknown until you figure it out.
Where is Albert Einstein's lab?
secret unknown place called underground.
Which section within the chemistry lab identifies unknown drugs within specimens?
idl
What is unique about elements made in the lab?
All are radioactive, dangerous and unstable
How do artificial elements differ from naturally occurring elements?
Artificial Elements can only be made by synthesisation in a lab (by firing an atom at a projectile). Wheras natural elements can be found naturally.
If your skin comes into direct contact an unknown material the first thing should do is?
Notify a lab supervisor
Which piece of lab equipment would be least useful in finding the precise density of an unknown liquid?
Electronic balance
Where do you get unknown eggs on pokefarm?
You can get Unown eggs from the Lab, Shelter, or through breeding. (Once you get one of them, you can breed the other forms if you pair an Unown with Ditto) If you'r talking about Unknown eggs in the meaning of not in your Dex, it's the same way :3 Lab, Shelter, or from trading Pokemon and breeding an egg.
How do to remember elements name down the group?
You really do not unless your daily work concerns the chemistry of different elements. It is never hard to find a periodic table of elements around a chemistry lab or office.
Was Marie Curie apart in any kinds of groups?
which group? She worked in the lab where she found radioactive elements
How do you solve using the periodic table lab using clues to identify elements?
you cant its impossible, trick question
What kinds of graphic elements do designers use on packaging toys?
they use computer graphics and animation in a tech lab!
