Question

6 which is the largest atom? 7 what is the relationship between atomic number and atomic mass?

Explanation:

1. Atomic size generally increases down a group and decreases across a period in the periodic table. Without specific atoms given, in general, atoms in lower - numbered periods and groups towards the left are larger among main - group elements.
2. The atomic number ($Z$) is the number of protons in the nucleus of an atom. The atomic mass ($A$) is approximately the sum of protons and neutrons ($A = Z+N$, where $N$ is the number of neutrons). For most stable atoms, the atomic mass is greater than the atomic number because of the presence of neutrons.

Answer:

1. Without specific atoms listed, cannot give a definite largest atom. But in general, atoms in lower periods and left - hand side of the periodic table are larger.
2. Atomic mass is approximately the sum of atomic number and number of neutrons. Usually, atomic mass > atomic number for stable atoms due to neutrons.