Edpuzzles
7; to gain one more electron to make a total of 8.
A chlorine atom has _ electrons in its outermost energy level and needs ___.
No, valence electrons are delocalized
Are valence electrons localized near particular atoms?
They can move in all directions but there is a net direction of the flow of electrons
How do the valence electrons move in an electric current?
3
How many electrons did each Al atom give up to the electron sea?
4
How many electrons does Carbon have in its outer shell?
Share
In a covalent bond, atoms _____ electrons.
transfer
In an ionic bond, atoms ____ electrons
give up
Sodium has a tendency to ___ its outermost electron.
Both the attraction and repulsion forces described above
What forces exist in metals
A larger number of valence electrons
What gives the metals a high melting point?
Valence electrons redistribute and continue to hold the metal cations together
What happens when you pound a metal with a hammer?
8
What is an octet of electrons?
electrostatic attraction between cations and free floating valence electrons
What is holding the atoms of a metal together in a solid?
Negative charge
What is the charge of the space between the atoms in a metal?
Electrostatic attraction between positive and negative io
What keeps the ions together in an ionic crystal?
2
What number of electrons is a stable configuration for the first shell?
negative
When an atom GAINS an electron like chlorine, its charge becomes ___.
positive
When an atom LOSES an electron like sodium, its charge becomes ___
the outermost energy is occupied with 8 electrons
When sodium gives up its outermost electron, then _
Oppositely charged ions get next to each other, which increases their repulsion
Why does an ionic crystal shatter when you pound it with a hammer?
It would become stable.
Why should carbon share its own 4 electrons with 4 more electrons from other atoms?
Opposite
ionic bonds occur when atoms are held together by the force of ____ charges.