2. Suatu ion Y^3+ mempunyai 36 elektron dan inti atomnya mempunyai 47 neutron. Notasi atom unsur Y adalah __ 3. Observe the table below!

Let's break down these chemistry questions:**Question 2: Determining the Atomic Notation of Element Y*** **Understanding Ions:** An ion is an atom that has gained or lost electrons, giving it a positive or negative charge. * **Y3+:** This notation tells us that element Y has lost 3 electrons, resulting in a +3 charge.* **36 Electrons:** Since Y3+ has 36 electrons, the neutral atom of Y must have had 39 electrons (36 + 3).* **Atomic Number:** The number of protons in an atom is its atomic number. Since a neutral atom has an equal number of protons and electrons, Y has an atomic number of 39.* **Mass Number:** The mass number is the sum of protons and neutrons. We know Y has 47 neutrons and 39 protons, so its mass number is 86 (47 + 39).**Atomic Notation:** The atomic notation for element Y is: **8639Y****Question 3: Missing Information**You've provided the start of a table, but there's no information to analyze. Please provide the complete table so I can help you with the question. **Let me know if you have any other questions or need further clarification!**