Helplpl

1. Argon (Ar).

2. Lithium (Li).

3. Oxygen (O).

Explanation:

1. We just have to find the element whose number is 18. This element is Argon (Ar).

2. We just have to find the element whose number is 3, because in a neutral atom, the amount of electrons is equal to the number of protons. This element is Lithium (Li).

3. We just have to find the element with an atomic mass of 16.0 amu. This element is Oxygen (O).

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation: