When an element has 12 neutrons and a Z=12, what element and isotope are present?

A) $}_{12}^{24} \mathrm{Mg}$
B) $}_{12}^{12} \mathrm{Mg}$
C) $}_{24}^{24} \mathrm{Mg}$
D) $}_{24}^{24} \mathrm{Cr}$

Question

When an element has 12 neutrons and a Z=12, what element and isotope are present?A)    12 24 M g { }_{12}^{24} \mathrm{Mg} 12 24 ​ Mg B)    12 12 M g { }_{12}^{12} \mathrm{Mg} 12 12 ​ Mg C)    24 24 M g { }_{24}^{24} \mathrm{Mg} 24 24 ​ Mg D)    24 24 C r { }_{24}^{24} \mathrm{Cr} 24 24 ​ Cr

Jackson Hallman · Accepted Answer

Final Answer : A, Explanation :   The element with Z=12 is Magnesium (Mg). The number of neutrons is 12, so the mass number (A) is Z + N = 12 + 12 = 24, making it   12 24 M g { }_{12}^{24} \mathrm{Mg} 12 24 ​ Mg  .

When an element has 12 neutrons and a Z=12, what element and isotope are present?

A) $}_{12}^{24} \mathrm{Mg}$
B) $}_{12}^{12} \mathrm{Mg}$
C) $}_{24}^{24} \mathrm{Mg}$
D) $}_{24}^{24} \mathrm{Cr}$

Definitions

Learning Objectives

Learning Objectives

Related questions

When an element has 12 neutrons and a Z=12, what element and isotope are present?A) 1224Mg{ }_{12}^{24} \mathrm{Mg}1224​Mg B) 1212Mg{ }_{12}^{12} \mathrm{Mg}1212​Mg C) 2424Mg{ }_{24}^{24} \mathrm{Mg}2424​Mg D) 2424Cr{ }_{24}^{24} \mathrm{Cr}2424​Cr

Definitions

Learning Objectives

Learning Objectives

Related questions

When an element has 12 neutrons and a Z=12, what element and isotope are present?

A) $}_{12}^{24} \mathrm{Mg}$
B) $}_{12}^{12} \mathrm{Mg}$
C) $}_{24}^{24} \mathrm{Mg}$
D) $}_{24}^{24} \mathrm{Cr}$