Atomic structure
What is the charge of protons?
positive
Location of valance electrons
outermost energy level (shell)
Which element is more reactive, Neon or Magnesium?
Magnesium
How many energy levels (rings/shells) does Potassium (K) have?
4
Find the element with atomic number 16
Sulfur
What is the location of electrons?
electron cloud
What do valance electrons determine?
reactivity or chemical properties of an element
Which element is more reactive, Boron or Sodium?
Sodium
How many energy levels does Boron (B) have?
2
Name the element with 9 protons
Fluorine
Name the 2 parts of atom
nucleus and electron cloud
How many valance electrons does Magnesium (Mg) have?
2
Which element is more stable, Argon or Chlorine?
Argon
What helps us determine how many energy levels an element has?
Period number
Name the element with mass of 31
Phosphorus
Name the particles that are located in the outermost (last) energy level
valance electrons
Which group of elements is the most stable (does not react chemically)?
Group 18 (Noble gases)
Which element is more reactive, Calcium (Ca) or Potassium (K)
Potassium (K)
How many energy levels does Krypton (Kr) have?
4
Name the element that has 3 valance electrons and 2 energy levels
Boron
What makes up mass of an atom
protons and neutrons
Which group is the most reactive?
Group 1 (Alkali metals)
Which element in group 18 has only 2 valance electrons?
Helium
What is the maximum number of energy levels that an element can have?
7
Name the element that has 6 valance electrons and 4 energy levels
Selenium