Question

question 14
1 pts
given the following symbol, the atomic number is _, the mass number is _, and the charge is _.
$_{12}^{24}mg^{2 + }$
24, 12, 2+
12, 24, 2+
2+, 24, 12
2+, 12, 24
question 15
1 pts
the average atomic mass is not a whole number because most elements exist naturally as mixtures of _.
ions
cations
anions
isotopes

Explanation:

Step1: Identify atomic number

The sub - script in the symbol $_ {12}^{24}Mg^{2 + }$ represents the atomic number. So the atomic number is 12.

Step2: Identify mass number

The super - script before the element symbol in $_ {12}^{24}Mg^{2 + }$ represents the mass number. So the mass number is 24.

Step3: Identify charge

The superscript after the element symbol in $_ {12}^{24}Mg^{2 + }$ represents the charge. So the charge is 2+.

Answer:

Question 14: B. 12, 24, 2+
Question 15: D. isotopes