sec 3 chem chap 3 Flashcards
what is a protons relative mass and charge and where its located in the atom
1, +1, nucleus
what is a neutrons relative mass and charge and where its located in the atom
1, 0 , nucleus
what is a electrons relative mass and charge and where its located in the atom
1/1840, –1 , electron shell
What is a proton number
Number of protons in the nucleus
what is a nucleon number
Total number of protons and neutrons in the nucleus
How to find neutron number
nucleon number - proton number
nucleon number is always larger than the…
proton number!
nucleon (mass) number is the number ____ in a periodic table
above
proton (atomic) number is the number _____ in a periodic table
below
Isotopes are atoms of the
same element that have the same proton (atomic) number but different nucleon (mass) numbers
The atoms of the elements down a group have
the same number of valence electrons.
elements in the same group have similar chemical properties as
chemical properties of an element depends on the number of valence electrons.
study slide 12 of chapt 3 part 2
study slide 12 of chapt 3 part 2
A positive ion is a
cation
(cation) is formed when an atom (usually metals)
loses its outershell electron(s) [also known as valence electrons] to achieve stable noble gas electronic configuration.
A negative ion is an
anion
(anion) is formed when an
atom (usually non-metal) gains electron(s) to achieve stable noble gas electronic configuration
to achieve stable noble gas electronic configuration, the electrons in the valence shell need to be
2, 10, 18
