The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed above. Which of these elements is in this group?
Lithium
Neon
Aluminum
Silver
Which two elements on the periodic table are in the same period?
Au and Ag
K and As
H and Li
He and As
Which two elements on the periodic table have similar reactivity
Au and K
He and As
He and H
N and As
A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown above. Which two atoms are in the same period in the periodic table?
