Atomic Structure
This is the number of electrons that fit in the 1st energy level of the atom
2
The atomic number tells us the number of ________.
protons, neutrons, or electrons?
Protons
This element is in Period 3, Group 14
Silicon (Si)
This periodic trend describes the size of the atom
Atomic radius
Which atom has more protons?
Se or Br
Br
Atoms with the same number of protons but different numbers of neutrons are called ______.
Isotopes
Protons 12
Neutrons 14
Electrons 10
What is the Atomic Mass?
26
List an atom with 8 valence electrons
Ne, Ar, Kr, Xe (the noble gases)
Which element has the greatest Atomic Mass?
Fe, Au, Hg
Hg
Which are the electrons on the outermost energy level.
Valence Electrons
An atom has
27 protons
+3 charge
How many electrons does it have?
24
How many Valence Electrons does Sulfur (S) have?
6
Which element is has lower ionization energy?
P or Cl
P
Sodium (Na) is part of this Periodic Table group (name of the group)
alkali metals
Which subatomic particles are in the nucleus?
Protons and Neutrons
Protons 12
Neutrons 14
Electrons 10
What is the charge?
+2
How many energy levels does Boron have?
2 energy levels
Which metal is more reactive?
Li or K
K
List an atom part of the halogen group
F, Cl, Br, or I
How many electrons go in the 2nd energy level?
8 electrons
An atom has
5 protons
-2 charge
How many electrons does it have?
7
How many energy levels does Calcium (Ca) have?
4
Which element has the greatest ionization energy?
Cl, P, or As
Atom X has 30 protons and 35 neutrons
Atom Z has 31 protons and 34 neutrons
True or false: These atoms are isotopes because they have the same mass of 70
False! They are different elements. Isotopes need to be the same element (same atomic number)