Which element has a full valence shell of electrons?

A. Magnesium (Mg)

B. Neon (Ne)

C. Chlorine (Cl)

D. Silicon (Si)

Which of the following lists objects in space in order of increasing size? a. galaxies, solar systems, stars, planets, moons b. asteroids, stars, planets, solar systems, galaxies c. planets, stars, solar system, galaxies, universe d.

Distinguish between constructive wave interference and destructive wave interference.

What are the differences between refraction and diffraction?

A 52 N sled is pulled across a cement sidewalk at constant speed. A horizontal force of 36 N is exerted. What is the coefficient of sliding friction between the sidewalk and the metal runners of the sled? Select one: A. 0.69 B. 16 C. 1872 D. 1.44

A supernova is the explosion of a dying? a. medium-mass star. b. high-mass star. c. protostar. d. low-mass star.

How do you find the highest occupied energy level in an element?

Which of the following items is most sensitive to increased acidity in the environment? concrete buildings glass windows railroad tracks paved roads

Rubber rods charged by rubbing with cat fur repel each other. Glass rods charged by rubbing with silk repel each other. A rubber rod and a glass rod charged respectively as above attract each other. A possible explanation is that a.

Which of the following rocks would most likely be found on the ocean floor? granite basalt marble shale

Which of the following is an example of a group that is both primary and voluntary? A. Two people who have chosen to be friends for over 30 years B. Two coworkers who have been assigned to the same department C.