First of all, don't ask us the questions in your homework. Secondly, you should be able to tell which three are elements and which is a compound. If not, you probably shouldn't be taking a chemistry class.
in group 13, the boron group, the most common element is
because boron is the first and main element in that group.
It is just named the boron group. The elements in the group are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and unumtrium (Uut) (scienticially prepared). The boron group all have 3 electrons in their valence levels making them an unstable group.
The Boron Group or Boron Family consists of:Boron (B)Aluminum (Al)Gallium (Ga)Indium (In)Thalium (Ti)Ununtrium (Uut)The Boron family is a series of elements in group 13.
Uranium
No!
the actinide group
Boron is in the 13th group, which is called the Boron Group.
Thallium (Tl) belongs to the Group 3 - Boron Family of elements. In the new IUPAC grouping, The Boron family is now Group 13.
Either IA (Hydrogen) or IIIA (Boron)
Uranium comes from the (radioactive) actinoids family, period 7. Uranium is a metal.
Carbon (C)
because hydrogen is in the form of gas and thus we can conclude that it is a non- metal
The name of group thirteen in the periodic table is Boron Family.
Hydrogen's properties differ so much from other elements that it can't be grouped.
Ypu think probable to hydrogen.
No, boron is in group 13, silicon is in group 14.