5. what is the isotope notation for a nucleus with 39 protons and 60 neutrons?\na: mass #?\nx: symbol?\nz…
5. what is the isotope notation for a nucleus with 39 protons and 60 neutrons?\na: mass #?\nx: symbol?\nz: atomic #?
Answer
Explanation:
Step1: Calculate Mass Number
Mass number (A) = protons + neutrons = 39 + 60 = 99.
Step2: Determine Atomic Number (Z)
Atomic number (Z) equals number of protons, so Z = 39.
Step3: Identify Element Symbol (X)
Element with Z = 39 is Yttrium (Y).
Step4: Write Isotope Notation
Isotope notation is $^A_Z X$, so $^{99}_{39}\text{Y}$.
Answer:
Mass # (A): 99
Symbol (X): Y
Atomic # (Z): 39
Isotope Notation: $\boldsymbol{^{99}_{39}\text{Y}}$