LT#2: Atomic Structure Flashcards
What will nitrogen do to become stable?
What charge will it have?
Will it be a Cation or Anion?
Gain 3 electrons
3-
Anion
How do you determine the number of neutrons
Mass number - Atomic number
What will rubidium do to become stable?
What charge will it have?
Will it be a Cation or Anion?
Lose 1 electron
1+
Cation
Looking at the periodic table, how do you quickly determine the number of valence electrons an atom has?
Group number (take second digit if more than one)
Describe protons
In nucleus
Positively charged
Mass of 1 u
Describe electrons
Orbit nucleus
Negatively charged
Mass of 0 u
Describe neutrons
In nucleus
Neutral charge
Mass of 1 u
How many protons, neutrons and electrons does a Cl atom have?
17 protons, 18 neutrons and 17 electrons
What will sulphur do to become stable?
What charge will it have?
Will it be a Cation or Anion?
Gain 2 electrons
2-
Anion
How do you determine the number of electrons
Atomic number
How many dots would there be on a Lewis diagram of P
5
Define Group
A column on the periodic table.
A Lewis diagram of an atom shows…
The element’s symbol, and represents the valence electrons as dots spread out on 4 sides
How many protons, neutrons and electrons does a Ti2+ ion have?
22 protons, 26 neutrons and 20 electrons
How many protons, neutrons and electrons does a N3- ion have?
7 protons, 7 neutrons and 10 electrons
How many dots would there be on a Lewis diagram of I
7
A Bohr diagram of an atom shows…
The number of protons and neutrons in the nucleus, and the number of electrons in each shell
Looking at the periodic table, how do you quickly determine the number of electron shells an atom has?
Period Number
Define Anion
Negatively charged ion
How many protons, neutrons and electrons does a Li atom have?
3 protons, 4 neutrons and 3 electrons
How many electrons fit in each shell?
2, 8, 8 ….
What will chlorine do to become stable?
What charge will it have?
Will it be a Cation or Anion?
Gain 1 electron
1-
Anion
Define Ion
Atoms that have gained or lost electrons to become stable
Define Period
Row on the periodic table.
Define Cation
Positively charged ion
How many dots would there be on a Lewis diagram of Si
4
What will calcium do to become stable?
What charge will it have?
Will it be a Cation or Anion?
Lose 2 electrons
2+
Cation
How do you determine the number of protons
Atomic number
