Question

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

Explanation:

Step1: Determine the element

The number of protons determines the element. An element with 11 protons is sodium (Na).

Step2: Calculate the mass number

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

Answer:

Na - 23