Charges
Nucleus consists of ____+_____.
Protons +neutrons
What is the charge on an electron?
minus 1 charge
This number equals the number of protons.
What is atomic number?
Atoms in group 4 have ___ valence electrons.
4
Atomic number =
protons = electrons
What is a cation?
Positive charge
How many electrons are in the nucleus of a stable atom with the atomic number of 20?
0 electrons
What element symbol "K" represents in the periodic table?
What is atomic number of K?
Potassium
19
What group is Argon in?
What is group 8
If a neutral element has 40 protons, how many electrons are there?
What is 40 electrons
What is a negative charge atom?
Which of the three sub-atomic particles is the lightest? ...
electron
Define isotope
What is the same element with different numbers of neutrons
Define group
What is the columns on the periodic table that groups multiple elements
Mass number is
number of protons +Neutrons
When the atom is considered neutral? (Relate p and e)
p=e
Where are the electrons inside an atom?
In Orbitals/ shells/ rings
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
What is an ion?
Define valence electrons
Define A.P.E.
Who is Atomic # = Proton # = Electron #
What is the charge on proton?
Plus 1 charge
What is the centre of an atom called?
Nucleus
What is charge on neutron?
Zero
Neutral
Group # = valence electron #. What is the 1 exception?
Helium is the 1 exception
Define M.A.N.
Mass # - Atomic # = Neutron #