Which is a characteristic of all ions? O They are made of one type of atom.
O They have one overall charge.
O They are made of two or more types of atoms
OThey have two or more overall charges

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

What type of electromagnetic radiation has a shorter wavelength than blue light

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided