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pupu
The elements immediately above and below aluminum in the same column of a wide form periodic table: boron and gallium. As is usual for relatively light elements, aluminum is more like the element below it, gallium, than the one above it: Aluminum and gallium are both metals, while boron is a nonmetal. In compounds with oxyanions, however, boron is similar to aluminum compounds with oxyanions.
Germanium
Because they both have a different number of valence electrons in their outer shells, and that is what determines the properties of the element.
Yes, they are both classified as non-metals and are located in Group 14.
pupu
Elements in a same group have same number of valence electrons and hence similar physical and chemical properties.
Uranium and neodymium are very different chemical elements.
Uranium and neodymium are very different chemical elements.
The elements immediately above and below aluminum in the same column of a wide form periodic table: boron and gallium. As is usual for relatively light elements, aluminum is more like the element below it, gallium, than the one above it: Aluminum and gallium are both metals, while boron is a nonmetal. In compounds with oxyanions, however, boron is similar to aluminum compounds with oxyanions.
Germanium
Because they both have a different number of valence electrons in their outer shells, and that is what determines the properties of the element.
to be a hard substance.
I would expect all elements in group 1 to have similar chemical behavior to that of sodium, except for hydrogen. Hydrogen is not a metal, but has only 1 valence electron like the other elements in group 1.
Yes, they are both classified as non-metals and are located in Group 14.
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.
Elements in the same group are most similar.