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Why does group 4A elements tend to form covalent bonds rather than ionic bonds? 
Rubidium by itself is neither ionic nor covalent. When it forms bonds with other elements, it forms ionic bonds.
they are put together in bonds; ionic bonds which are metal to nonmetal or covalent bonds which are non metal to nonmetal. Ionic bonds transfer electrons and covalent bonds share electrons
The nature of the elements in the bond. Elements with a high difference in electronegativity have ionic bonds, elements with a small difference have nonpolar covalent bonds, and elements with no difference (if an atom binds to an atom of the same element) have nonpolar covalent bonds. The more electronegative eleme
Covalent or molecular compounds form when elements share electrons in a covalent bond to create molecules.
Hydrogen is involved in covalent bonds but sometimes also in ionic bonds.
A nonpolar bond could only occur with covalent bonds, as all ionic bonds are polar. This means that all elements involved in nonpolar bonds are nonmetals.
Rubidium by itself is neither ionic nor covalent. When it forms bonds with other elements, it forms ionic bonds.
These bonds tend to be ionic. However, all bonds are somewhere between purely ionic and purely covalent.
Why does group 4A elements tend to form covalent bonds rather than ionic bonds? 
Rubidium by itself is neither ionic nor covalent. When it forms bonds with other elements, it forms ionic bonds.
they are put together in bonds; ionic bonds which are metal to nonmetal or covalent bonds which are non metal to nonmetal. Ionic bonds transfer electrons and covalent bonds share electrons
The nature of the elements in the bond. Elements with a high difference in electronegativity have ionic bonds, elements with a small difference have nonpolar covalent bonds, and elements with no difference (if an atom binds to an atom of the same element) have nonpolar covalent bonds. The more electronegative eleme
Covalent or molecular compounds form when elements share electrons in a covalent bond to create molecules.
Group-14 elements share electrons. they form covalent bonds.
The two main types of chemical bonds are ionic and covalent.
I think it's covalent as the the two elements are both nonmetallic.