14 question (3 points)\nan neutral atom has 60 electrons and a mass number of 143.\n4th attempt\npart 1 (1…

14 question (3 points)\nan neutral atom has 60 electrons and a mass number of 143.\n4th attempt\npart 1 (1 point)\nhow many protons does this atom have? 60\npart 2 (1 point)\nhow many neutrons does this atom have? 83\npart 3 (1 point)\nwhat is the symbol of this atom? enter both the mass and the atomic number.

14 question (3 points)\nan neutral atom has 60 electrons and a mass number of 143.\n4th attempt\npart 1 (1 point)\nhow many protons does this atom have? 60\npart 2 (1 point)\nhow many neutrons does this atom have? 83\npart 3 (1 point)\nwhat is the symbol of this atom? enter both the mass and the atomic number.

Answer

Explanation:

Step1: Recall atom - electron - proton relationship

In a neutral atom, the number of electrons equals the number of protons. Given 60 electrons, the number of protons is 60.

Step2: Calculate number of neutrons

The mass number is the sum of protons and neutrons. Let $n$ be the number of neutrons, $p$ be the number of protons, and $A$ be the mass - number. So $A=p + n$. Given $A = 143$ and $p = 60$, then $n=A - p=143 - 60=83$.

Step3: Determine the element symbol

The atomic number $Z$ is equal to the number of protons. Here $Z = 60$. The element with atomic number 60 is Neodymium, symbol $Nd$. The notation for an atom is ${Z}^{A}X$, so the symbol is ${60}^{143}Nd$.

Answer:

Part 1: 60 Part 2: 83 Part 3: $_{60}^{143}Nd$