Find the Element
This element has the electron configuration 1s² 2s² 2p⁶ 3s¹.
What is sodium (Na)?
This periodic trend describes an atom’s ability to attract electrons in a bond.
What is electronegativity?
Which element has the larger atomic radius, Li or F?
What is lithium (Li)?
These are the electrons involved in chemical bonding.
What are valence electrons?
Write the full electron configuration for hydrogen.
What is 1s¹?
This element has the noble gas configuration [Ne] 3s² 3p⁴.
What is sulfur (S)?
Electronegativity increases across a period because the nucleus has a higher
What is effective nuclear charge?
Which element has the higher electronegativity, O or S?
What is oxygen (O)?
How many valence electrons do all Group 1 elements have?
What is 1?
Write the electron configuration for carbon.
What is 1s² 2s² 2p²?
This element is in Period 3, Group 17.
What is chlorine (Cl)?
Atomic radius decreases across a period because __________ increases.
What is nuclear charge?
Which element has the greater ionization energy, Na or Mg?
What is magnesium (Mg)?
This group contains elements with 7 valence electrons.
What is Group 17 (halogens)?
Write the noble gas configuration for magnesium
What is [Ne] 3s²?
This element has 4 energy levels, 2 valence electrons, and is an alkaline earth metal.
What is calcium (Ca)?
This trend measures how much energy is needed to remove an electron.
What is ionization energy?
Which element has the larger atomic radius, Na or Al?
What is sodium (Na)?
An element in Group 14 will have this many valence electrons.
What is 4?
Write the electron configuration for chlorine.
What is 1s² 2s² 2p⁶ 3s² 3p⁵?
This element has the electron configuration [Ar] 4s² 3d¹⁰ 4p⁵.
What is bromine (Br)?
Among fluorine, oxygen, and nitrogen, this element has the highest electronegativity.
What is fluorine (F)?
Put the following elements in order of increasing atomic radius (smallest → largest): F, O, N, C.
What is F < O < N < C?
Which element has similar properties to oxygen, and why?
What is sulfur, because it is in the same group and has the same number of valence electrons
Write the noble gas configuration for iron (Fe).
What is [Ar] 4s² 3d⁶?