Which properties describe elements that are nonmetal gases? Select all that apply. A) composed of an extended structure
B) composed of individual atoms or diatomic molecules
C) high melting point
I D) low melting point
E) strong attractions between particles
OF) weak attractions between particles
Please help ASAP

Which of these reactions are redox reactions? check all that apply. cd + hcl → cdcl2  + h2cucl2  + na2s → 2nacl + cuscaco3  → cao + co2          2zns + 3o2  → 2zno + 2so2          ch4  + 2o2  → co2  + 2h2o

Which description best characterizes the motion of particles in a solid?

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