Question

what particle has 11 protons and 12 neutrons? 12 mg 24.31 23 v 50.94 11 na 22.99 na - 23 mg - 23 na - 12

Explanation:

Step1: Determine the element

The number of protons determines the element. Since there are 11 protons, the element is sodium (Na).

Step2: Calculate the mass number

The mass number is the sum of protons and neutrons. Given 11 protons and 12 neutrons, the mass number is \(11 + 12=23\).

Answer:

Na - 23