An atom that has a charge of +3 gains two electrons. The charge on the atom will now be

What type of nuclear decay causes the atomic number of an element to increase by 1?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.