When an element has Z=26 and 29 neutrons, what element and isotope is this?

A) $}_{29}^{26} \mathrm{Cu}$
B) $}_{29}^{55} \mathrm{Cu}$
C) $}_{26}^{29} \mathrm{Fe}$
D) $}_{26}^{55} \mathrm{Fe}$

Question

When an element has Z=26 and 29 neutrons, what element and isotope is this?A)    29 26 C u { }_{29}^{26} \mathrm{Cu} 29 26 ​ Cu B)    29 55 C u { }_{29}^{55} \mathrm{Cu} 29 55 ​ Cu C)    26 29 F e { }_{26}^{29} \mathrm{Fe} 26 29 ​ Fe D)    26 55 F e { }_{26}^{55} \mathrm{Fe} 26 55 ​ Fe

Zybrea Knight · Accepted Answer

Final Answer : D, Explanation :   The element with atomic number (Z) 26 is iron (Fe), and with 29 neutrons, its mass number (A) is Z + neutrons = 26 + 29 = 55, making it   26 55 F e { }_{26}^{55} \mathrm{Fe} 26 55 ​ Fe  .

When an element has Z=26 and 29 neutrons, what element and isotope is this?

A) $}_{29}^{26} \mathrm{Cu}$
B) $}_{29}^{55} \mathrm{Cu}$
C) $}_{26}^{29} \mathrm{Fe}$
D) $}_{26}^{55} \mathrm{Fe}$

Definitions

Learning Objectives

Learning Objectives

Related questions

When an element has Z=26 and 29 neutrons, what element and isotope is this?A) 2926Cu{ }_{29}^{26} \mathrm{Cu}2926​Cu B) 2955Cu{ }_{29}^{55} \mathrm{Cu}2955​Cu C) 2629Fe{ }_{26}^{29} \mathrm{Fe}2629​Fe D) 2655Fe{ }_{26}^{55} \mathrm{Fe}2655​Fe

Definitions

Learning Objectives

Learning Objectives

Related questions

When an element has Z=26 and 29 neutrons, what element and isotope is this?

A) $}_{29}^{26} \mathrm{Cu}$
B) $}_{29}^{55} \mathrm{Cu}$
C) $}_{26}^{29} \mathrm{Fe}$
D) $}_{26}^{55} \mathrm{Fe}$