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What element did Mendeleev predict before it was discovered?
Mendeleev predicted that gallium belonged to the R2O3. Gallium was not discovered until 1874. The noble gases weren't discovered until 1894 through 1899.
Which element does gallium have more in common with germanium or indium?
Gallium has more in common with indium as they are both metals whereas germanium is a metalloid.
Which elements did Mendeleev leave space for in his first periodic table?
Mendeleev left spaces for undiscovered elements. He named them eka-aluminium, eka-silicon etc.
Which elements did Mendeleev leave spaces?
What Mendeleyev did with the empty spaces was that he left them empty. Say for example, he didn't know Boron, because it wasn't discovered at that time. He left the spot for Boron empty because he didn't know what it was. He predicted that in the future, scientists would find out about new elements, and his predictions were right. That's why, the modern Periodic Table of Elements has more elements that Mendeleyev had put on his list of elements.
What element is located in group 8 period 4?
Gallium (Ga)
What element did Mendeleev predict before it was discovered?
Mendeleev predicted that gallium belonged to the R2O3. Gallium was not discovered until 1874. The noble gases weren't discovered until 1894 through 1899.
Which element does gallium have more in common with germanium or indium?
Gallium has more in common with indium as they are both metals whereas germanium is a metalloid.
What did mendeleev call his as-yet-undiscovered elements?
he called them the actinides. they were ekaaluminium, ekaboron, and ekasilicon (aka germanium, gallium, and scandium)
What is the modern name of ekaaluminium?
The modern name of Ekaaluminium is Gallium. Mendeleev discovered Gallium in 1875. He also discovered Ekaboron (now known as Scandium), and Ekasilicon (now known as Germanium).
What is eka boron eka aluminum eka silicon?
eka aluminum is gallium eka boron is scandium eka silicon is germanium
What were the three missing elements in the periodic table?
See "Mendeleev's predicted elements" in Wikipedia The answers are: scandium (Sc - 21), gallium (Ga - 31), technetium (Tc - 43), and germanium (Ge - 32) He temporarily named them to be: ekaboron (Eb), ekaaluminium (El), ekamanganese (Em), and ekasilicon (Es).
Which elements did Mendeleev leave space for in his first periodic table?
Mendeleev left spaces for undiscovered elements. He named them eka-aluminium, eka-silicon etc.
What elements are named after are countries?
Elements are named after countries, not countries after elements ! Countries: francium, germanium, gallium, ruthenium, indium Regions: scandium, hassium, californium Continents: americium Also many towns.
What elements were named after countries?
americium, germanium, scandium, polonium
Is gallium a metal nonmetal?
Gallium is a metal. It is next to germanium, a semi-metal.
Are silicon bismuth antimony gallium germanium elements or substances?
both
What are the elements that contains 18 electrons?
For the most part Argon has 18 electons, but there are ions that have 18 electrons: Phosphurus, Sulfur, Cluorine, Potassium, Calcium, Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper, Zinc, Gallium, and Germanium.
