Kr 4d10 5s2 5p2 would be your answer.
Answer:
The protons and electrons are attracted to each other because they are oppositely charged particles.
Explanation:
Protons have a positive charge and electrons have a negative charge, opposites attract.
37.5 for median ( first organize from least to greatest, elimate from each side until you get to center then add two numbers and divide by two.) Hope that helps.