Reactivity And Electronegativity Flashcards
Reactivity
What is an example of comparing the chemical reactivity of elements and compounds that can establish patterns?
Reactivity decreases as you move left to right across a period
Reactivity
What is an example of comparing the chemical reactivity of elements and compounds that can establish patterns, within a family of representative metals?
Reactivity increases as you move down and up. the most reactive metals lose their outer election very easily
Reactivity
What is an example of comparing the chemical reactivity of elements and compounds that can establish patterns, within a family of non-metal?
Reactivity increases down the group because increases nuclear shielding prevents the gain of electrons easily
Electronegativity
What is electronegativity?
Electronegativity of an element is the measure of the element’s atom’s ability to attract shared electrons in a chemical bond.
What happens when two atoms each with an orbital containing one bonding electron, collide so that these half-filled orbitals overlap?
the bonding electrons will form a bond and in doing so fill the valence shells of both atoms
what happens when two atoms each with an orbital containing one bonding electron, collide so that these half-filled orbitals overlap, which atom wins?
the atom with a higher electronegativity.
what are the two types of covalent bonds?
polar-electrons are unequally shared by atoms
nan polar- electrons are equally shared
what is a bond dipoles?
a measure of the polarity of a chemical bond in a molecule between a atoms
what does dipole mean
two poles when a molecule has a positive pole and a negative pole
what is the general trend for electronegativity as you move left to right across a period?
the measure of electronegativity for each element increases.
what is the general trend for electronegativity as you move down a group?
the electronegativity decreases.
