Atoms & Ions Flashcards
What is a group on the periodic table?
Columns
What does a group on the periodic table quickly tell you about an atom?
The number of electrons in the valence shell of an atom
What is a valence shell?
The outer orbital shell of an atom
Which group of elements on the periodic table of elements are shiny silvery very reactive metals?
Group 1 - Alkali Earth Metals
Which group of elements on the periodic table of elements are poisonous and very reactive non-metals?
Group 17 - Halogens
Which group of elements on the periodic table of elements are stable, non-reactive non-metals?
Group 18 - Noble Gases
What does the atomic number of an element tell you about an atom?
The number of protons in the nucleus and number of total electrons in orbit
How is the number of neutrons in an atom found?
Atomic mass - atomic number
How do you find out the number of protons an atom has?
Atomic Number
How do you find out the number of electrons an atom has?
Atomic Number
What information does a Bohr Diagram of an atom tell you?
Number of protons, neutrons in nucleus and number of electrons in each orbit
What information does a Lewis Dot Diagram of an atom tell you?
The element symbol and number of valence electrons
What does a period on the periodic table quickly tell you about an atom?
The number of electron orbits an atom has.
What charge does an atom have?
Neutral charge (because it has the same number of protons and electrons)
What is an ion?
An atom that has gained or lost electrons to obtain a full shell (aka stable octet)
