Answer : The correct answer is ⁶⁴ Zn ₃₀ .
Positron is ⁰e₊₁ particle . When it is absorbed the atomic number increases by 1 but atomic mass remains same . The given nuclide is ⁶⁴ Cu₂₉ . In this atomic mass is 64 and atomic number is 29 .
So when it will absorb one positron the atomic number will increase by 1 that is atomic number = 30 . Since atomic number = 30 is for Zinc atom , so when ⁶⁴ Cu₂₉ absorb one positron it produces ⁶⁴ Zn ₃₀ as resulting atom . The reaction can be written as:
⁶⁴ Cu₂₉ + ⁰e₊₁ → ⁶⁴ Zn ₃₀
Answer:
Physical: Conducts Electricity, Magnetic, Malleable and ductile
Chemical: Rusting, reacts with acid
Explanation:
The reason, why I categorized the listed items as "Physical" was because there is no major change, no matter if it is magnetic, malleable, etc. The item is still in its original form.
Whilst the reasons I put rusting, and reacting with acid as chemical, is because when an item rusts, you can no longer change it back to its original state, and when you an item reacts with the acid, at times (depending on the metal, it will create or form compunds)
B is the right one. They aren't compounds, which is a mix of two elements.
Answer: I think it’s A sorry if I’m wrong
Explanation: