Question

complete the table to determine the number of subatomic particles in this rub ion, rb⁺.

nuclear symbol	subatomic particle
	neutrons: $\square$
	electrons: $\square$

Explanation:

Step1: Determine Protons

The atomic number (bottom number) is 37, so protons = 37.

Step2: Calculate Neutrons

Mass number (top number) is 85. Neutrons = mass number - atomic number = \( 85 - 37 = 48 \).

Step3: Find Electrons

\( \text{Rb}^+ \) has lost 1 electron. Electrons = protons - charge = \( 37 - 1 = 36 \).

Answer:

Protons: 37
Neutrons: 48
Electrons: 36