Question

for na+ with a mass number of 22 what is the number of electrons * 1 point
40
11
56
12
22
78
100
44
53
25
54
10
13
131

Explanation:

Step1: Identify sodium's atomic number

Sodium (Na) has an atomic number of 11, which means neutral Na has 11 electrons.

Step2: Consider the ion charge

Na+ indicates a sodium ion with a +1 charge. A +1 charge means it has lost 1 electron.

Step3: Calculate number of electrons

So, the number of electrons in Na+ is \(11 - 1=10\).

Answer:

10 (corresponding to the option with value 10 in the list provided in the question)