Valence Electrons
What are valence electrons?
Electrons of an atom that have the highest energy level and in outer valence shell of an atom
Contents of an electron dot diagram.
What is the symbol for the element surrounded by dots
A chemical bond.
What is the force of attraction that holds atoms together.
A Molecule
What is a neutral group of atoms formed by chemical bonds
The valence of Beryllium
What is 2.
The meaning of the electron dot diagram
What is the number of valence electrons
What is when 2 atoms share 2 pairs of electrons are shared.
Beryllium is known to have it valence number due to this.
What is because its an Alkaline Earth Metal OR B/c it is in group 2.
The valence electrons for Noble gases.
What is 8.
Ionic Bond
What is the attraction between two oppositely charged ions?
Polyatomic
What is many atoms.
A triple bond
What is when 2 atoms share 3 pairs of electrons.
True or False: The number of valence electrons does not determine the ways the atom bonds with others
What is False
The valence electrons for the Boron Family.
What is 3.
Which elements have eight valence electrons, therefore being the most unreactive?
Noble gases (neon, argon, krypton, and xenon)
Covalent Bond
What is a bond that forms when 2 atoms share electrons.
What is Positive 1st and negative 2nd
What does the number of valence electrons in an atom determine?
Which properties that element would have (reactivity etc..) OR if and what it will bond with
How many valence electrons can be in an atom? Hint: It is a range of numbers.
What is 1-8
Which of these events can happen when an atom reacts?
A: electrons are transferred between atoms
B: electrons are shared between atoms
C: the number of valence electrons increases to 8 D: the atom gives up loosely held valence electrons
E: all of the above
What is E
The reason why Alkali metals are highly reactive
What is they have 1 valence electron.
The means that Sodium Chloride Bonds
What is Na metal gives and an electron, Cl takes it, they become oppositely charged and attract each other.