Powdery Mildew. Overhead watering can lead to powdery mildew on cucumber leaves. Mildew grows quickly on large, older leaves, causing them to turn yellow and wilt. Cucumber fruits are not directly affected, but can become sunburned when the protective leaves wither away, leaving them exposed.
Atomic mass is roughly equal to the sum of the individual particle masses of an atom. Atomic mass is typically calculated by adding the number of protons and neutrons together, ignoring the electrons because of their small size. Daltons are the standard units used for measuring atomic mass.
Look for the atomic mass of the element. To find the number of neutrons, you will first need to find the atomic mass. An elementâs atomic mass (also known as the atomic weight) is the average mass of atoms of an element. The atomic mass can be found underneath the symbol for the element.