Enter Category Name
what is the charge of neutrons
neutral
what is the charge of protons
positive
what is the charge of electrons
negative
what can be found in the nucleus
protons and neutrons
the scientist who came up with the idea of periodic table
mendeleev
positive
the charge of the whole atom
neutral
electron cloud
the mass of 1 proton
1 amu
measuring unit of atomic mass
amu
a letter or two letters that represent the element
chemical symbol
the number of protons in an atom
atomic number
isotopes
the mass of a nitrogen atom with 7 protons and 8 neutrons
15 amu
the number of periods
7
how many groups in the periodic table
18
the british scientist who created the modern periodic table
Henry Moseley
chemical symbols are driven from which language
latin
most of the atom's volume is found in________
electron cloud
Protons and neutrons together make up the _______
atomic mass
mass number is another expression for___-
atomic mass
the number of electrons equals the number of_________in an atom
protons
which property henry moseley used to organize elements in periodic table
atomic number
how many elements did we discover by 1869
63
what is my father's name
Moad