Electron Configuration
What is the electron configuration for oxygen (O) in its stable state?
1s² 2s² 2p⁴
What is the charge of a sodium ion (Na+)?
+1
What is the first element on the periodic table?
Hydrogen (H)
Draw a Lewis Dot Structure for Beryllium (Be). It has 4 electrons in its stable state.
The drawing should have 2 dots surrounding the chemical symbol.
What is the smallest unit of matter?
Atom
How many electrons can the second energy level (n=2) hold in total?
The second energy level (n=2) can hold a total of 8 electrons.
What type of ion does an atom become when it loses electrons? There's a specific name for this type of ion.
Cation
What is the symbol for the element oxygen on the periodic table?
Draw a Lewis Dot Structure for Oxygen. It has 8 electrons in its stable state.
The drawing should have 6 dots surrounding the element symbol.
What is electron cloud?
The term "electron cloud" refers to the probabilistic, three-dimensional region around an atomic nucleus where electrons are likely to be found.
Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²?
Calcium (Ca)
When an atom gains electrons, what type of ion does it form? There's a specific name for this type of ion.
Anion
Elements in the periodic table are arranged in order of increasing __________.
Draw a Lewis Dot Structure for Radon (Rn). It belongs to the noble gas family.
The drawing should have 8 dots surrounding the chemical symbol.
What's the shape of p-orbital?
The p orbital has a dumbbell or figure-eight shape.
Which element has the electron configuration 1s² 2s² 2p⁴?
Oxygen (O)
What does the superscript -3 mean in front of an element symbol (e.g. Al -3)?
Gained 3 electrons
The rows in the periodic table are called __________.
Periods
Draw a Bohr model for Carbon (C) in its stable form. The atomic mass for this element is 12 amu and the atomic number is 6. Make sure to include all important parts.
Teacher Approval
How many neutrons exist in Magnesium (Mg) in its stable form? The atomic number is 12 and its atomic mass is 24 amu.
12 neutrons
What is the electron configuration of a chlorine (Cl) ion with a charge of -1?
1s² 2s² 2p⁶ 3s² 3p⁶
Which group on the periodic table does not typically form ions because it has a full valence electron shell?
Noble gas group
How would you quickly find the number of valence electron for an element using the periodic table?
Identify the Group Number: Elements in the same vertical column on the periodic table belong to the same group (also known as a family). The group number is often written at the top of the column.
Draw a Bohr model for Chloride (Cl) in its stable form. The atomic mass for this element is 35 amu and the atomic number is 17. Make sure to include all important parts.
Teacher Approval
What are the three main subatomic particles found in an atom, and what are their respective charges and locations within the atom?