Boron (B), Aluminum (Al), Gallium (Ga), Indium (Ga), and Thallium (Tl).
Although boron is a metalloid and the other elements in group 3A of the Periodic Table are metals, it is placed with group 3A because it has three valence electrons at its highest-energy orbitals. It is also a good conductor of electricity.
The elements in 3A all have 3 valence electrons.
No, Group 3A elements are not alkaline earth metals. Group 3A elements include boron, aluminium, gallium, indium, and thallium. Alkaline earth metals are found in Group 2A of the periodic table, such as calcium and magnesium.
Beryllium is the group 3A element with the highest ionization energy.
Group 2A elements form compounds that are less soluble in water. Group 2A elements are harder. Group 2A elements have an additional valence electron. Group 2A elements are less reactive.
Although boron is a metalloid and the other elements in group 3A of the Periodic Table are metals, it is placed with group 3A because it has three valence electrons at its highest-energy orbitals. It is also a good conductor of electricity.
In group 3A elements, or elements in group 13, have only one unpaired electrons.
Thallium
No,but group 2 are alkaline earth elements
The elements in 3A all have 3 valence electrons.
No, Group 3A elements are not alkaline earth metals. Group 3A elements include boron, aluminium, gallium, indium, and thallium. Alkaline earth metals are found in Group 2A of the periodic table, such as calcium and magnesium.
Beryllium is the group 3A element with the highest ionization energy.
Group 2A elements form compounds that are less soluble in water. Group 2A elements are harder. Group 2A elements have an additional valence electron. Group 2A elements are less reactive.
Elements in the same group have similar properties. The groups are made according to the properties of elements. Elements in a group have an equal number of valence electrons.
main group elements
Sulphur and helium have entirely different properties. Sulphur has properties similar to group 16 elements. Helium has properties similar to group 18 elements.
The elements in group 3A and 6A show a dip in ionization energy due to the presence of a full or half-full subshell. In group 3A, elements have a stable electronic configuration when one electron is removed, resulting in a lower ionization energy. In group 6A, elements exhibit a half-filled p orbital when one electron is added, making it easier to remove an electron and thus lowering the ionization energy.