13 Boron family
Dietrich mcdonald,Maria rippy
Boron
Name of element Boron
Symbol of element B
Atomic Number of element 5
Atomic Mass of element 11 amu
How many valence electrons does this element have? has 3 valence electrons
What are the uses for this element? Amorphous boron is used as a rocket fuel igniter and in pyrotechnic flares.
Who discovered this element? Louis-Joseph Gay-Lussac and Louis-Jacques Thénard in Paris, France, and Humphry Davy in London, UK
Aluminum
name of element: Aluminum
symbol of element: Al
atomic number of element: 13
atomic mass of element: 27 amu
number of protons/electrons of element: 13
number of neutrons of the element: 14
classification of the element: non metal
the aluminum has 2 valence electrons
and was discovered by hans christian orsted
Gallium
Name of element:Gallium
Symbol of element Ga
Atomic Number of element:70
Atomic Mass of element:31
How many valence electrons does this element have? 3
What are the uses for this element?science
Who discovered this element?Paul-Émile Lecoq de Bois)
indium
Name of element Indium
Symbol of element In
Atomic Number of element 49
Atomic Mass of element 115 amu
How many valence electrons does this element have? has 3 valence electrons
What are the uses for this element? Indium is used to dope germanium to make transistors.
and was discovered by ferdinand reich
2
thallium
Name of element thallium
Symbol of element Tl
Atomic Number of element 81
Atomic Mass of element 203 amu
How many valence electrons does this element have? 3
What are the uses for this element?it is odorless and is colorless
Who discovered this element?William Crookes and Claude Auguste