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Hydrogen, lithium, sodium, potassium, rubidium, cesium and francium are the elements located in group 1 of the periodic table.
Calcium is in group 2/IIA, so the other elements in that group would be expected to behave most like calcium.
Physically I would expect to find the same boiling and melting points, and the same density. Chemically, I would expect the same reactivity with other substances.
I would expect it is Silicon, same as on Earth.
you only find 1 type of atom in an element
Technetium is chemically similar to manganese and rhenium.
Germanium
lower left
Oxygen, Selenium, Tellurium, or any other element in the same group as sulfur would have a similar Lewis symbol.
Hydrogen, lithium, sodium, potassium, rubidium, cesium and francium are the elements located in group 1 of the periodic table.
The elements are: lithium, sodium, potassium, rubidium, caesium and francium.
Elements in a same group have same number of valence electrons and hence similar physical and chemical properties.
It shatters and is thus brittle and very unlikely to be a metal. It is a non-metal and thus at the right hand side of the periodic table. It is the element sulfur.
One is magnesium. Other is Strontium. One below and one above Calcium in periodic table column.
Oxygen is in the upper right side of the periodic table.
The newest officially discovered elements are Ununquadiumand Ununhexium so, we'll focus on those.Ununquadium will be part of the Carbon series, so we would expect it to have properties similar to those elements (e.g. 4 electrons in the outer shell). The closest relation to it in that group would be Lead.Ununhexium will be part of the Oxygen series, so, again, we would expect it to have properties similar to those elements (e.g. 6 electrons in the outer shell). The closest relation to it in that group would be Polonium, which is also the first radioactive element.
This element is carbon.