A A converging lens has focal length 5 cm. An object is placed 3 cm from the centre of the
lens, on the principal axis. Draw an accurate
ray diagram to represent this.
b Use your diagram to determine the distance of
the virtual image formed from the lens.

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as