the smallest part of an element that maintains the properties of the elment
named the atom for atomos(indivisible)
Modern Atomic Theory
Electrons are in electron clouds but we are not sure of their exact location
mass=1 amu charge= positive location= nucleus
mass= 1 amu charge=neutral location= nucleus
mass=too small to measure charge negative location= in electron clouds
Atoms of the same element that have the same number of protons but a different number of neutrons.
How many electrons in Alkali metals? what family?
1 and first
how many electrons in Alkaline earth metals?what family?
2 and second
How many electrons in boron? what family?
3 and 13th
how many electrons in carbon? what family?
4 and 14th
how many electrons in nitrogen?what family?
5 and 15th
how many electrons in oxygen? what family
6 and 16th
how many electrons in the hallogen family(saltmakers)? what family?
7 and 17th
how many electrons in the noble gases? what family?
full either k=2 or l/m=8 and 18th
how many energy levels are there?
how many electrons does it take for the k shell to be full?
how many electrons does it take to fill shells L-Q ?
to the left of the zigzag line
8/ touches zigzag line excluding aluminum
to the right of the zigzag line
same number of shells in the outer energy level
an atom that has a positive or negative chargethrough the transfer of electrons
bond that forms when electrons are transferred from one atom to another, which results in a positive ion and a negative ion
atoms get larger when:
going down a family
atoms get smaller when:
going across a period
a bond formed when atoms share one or more pairs of electrons