Question

questions 28 - 31 prompt
questions 28 - 31: complete the tables by filling in the correct number of protons, neutrons and electrons.
20 fill in the blank 1 point
isotope: manganese-55
charge: 2+

protons: type your answer...

neutrons: type your answer...

electrons: type your answer...

Explanation:

Step1: Determine number of protons

Manganese (Mn) has an atomic number of 25, so the number of protons is 25.

Step2: Calculate number of neutrons

The mass number is 55. Neutrons = Mass number - Atomic number = \( 55 - 25 = 30 \).

Step3: Find number of electrons

The charge is \( 2^+ \), meaning it has lost 2 electrons. Electrons = Protons - Charge magnitude = \( 25 - 2 = 23 \).

Answer:

• # protons: 25
• # neutrons: 30
• # electrons: 23