Periodic Table of Elements Questions
Explore questions in the Periodic Table of Elements category that you can ask Spark.E!
All Halogens have a ____ oxidation number (or charge)
All Noble Gases have ____ valence electrons
As you go down a family of nonmetals, the reactivity _________
For groups 1 and 2, the number of valence electrons is _______________________________For groups 13-18, the number of valence electrons is _________________________
Who's idea was it to arrange elements in the periodic table according to their chemical and physical properties
Electronegativity _________ across a period and ________ down a group
Mendeleev left spaces in his periodic table and predicted several elements ant there
As we increase atomic number across a periodic table the radius
Electron affinity is a measure of the ease with which an atom gains electrons. Electronegativity is a measure of the ability of an atom to attract electrons.
Mendeleev is credited with developing the first
Each time we remove an electron from an atom the ionization energy does what
The physical and chemical properties of the elements are periodic function of their atomic numbers
Metals tend to form which type of ionNon-metals tend to form which type of ion
What is used to indicate a positive electron affinity
noble gases have electron configurations that end in
Electron afinity tends to __________ across a period and __________ down a group
As the atomic number decreases down the group, they become______________
Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing
Anionic radii ________ across a period and ________ down a group
Atomic Radii ________ across a period and __________ down a group