Terms to Know Flashcards
what is the atomic number and where is it located?
The bold number in the top left corner, it is the number of protons in the nucleus of an atom.
What is the atomic radius and what does it mean?
the atomic radius is the size of an atom in pictometers, as you move down a group it it increases as you move across a period it decreases
what is an anion?
a negatively charged ion
what is a cation?
A positively charged ion
What is a covalent bond?
the sharing of electrons between two atoms
What are diatomic elements? Name them
molecules made of only two atoms (H, N, O, F, Cl, Br, I)
What is electron affinity?
the energy change when an electron is added to an atom
What is electronegativity
The ability of an atom in a bond to attract shared electrons
What is an ion?
atom or molecule with an electric charge due to the loss or gain of an electron
What is an ionic bond?
An attractive electrostatic force between positive and negative ions
what is ionization energy?
the amount of energy it takes to remove an electron from an atom
what is isoelectonic
having the same number of electrons
what is an isotope
atoms with the same number of protons but different number of neutrons (carbon for example)
What id isotopic abundance and whats the formula?
The abundance if an element,
formula= quantity of isotope /quantity of all isotopes
what is the mass number
number in the top right corner, round up if needed
