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PERIODIC TABLE PART 2

Horizontales
The maximum number of electrons which occupy the second shell in an atom.
Elements with the same number of shells are arranged in......
These elements are found on the left and middle of the modern periodic table.
Non-metals gain electrons to form this type of ion.
The maximum number of electrons which occupy the first shell in an atom (closest to the nucleus).
In the early 1800s, elements where arranged in order of......(two words)
John Dalton described atoms as.... (two words).
These elements are found on the right hand side of the modern periodic table (two words).
The type of model which is a ball of positive charge with electrons distributed throughout (two words).
JJ Thomson concluded atoms must contain smaller particles with a negative charge called....
James Chadwick provided evidence for this sub-atomic particle.
Verticales
The maximum number of electrons which occupy the third shell in an atom.
Elements with similar properties and the same number of outer electrons are arranged in......
The Neils Bohr model suggested that electrons where contained here.
Metals lose electrons to form this type of ion.
Dmitri Mendeleev left these in his version of the periodic table for undiscovered elements.
The modern periodic table has elements in order of........(two words).
Rutherford and Marsdon carried out the 'alpha particle scattering' experiment to explain this model.