Question

Write the following isotopes in hyphenated form (e.g., "carbon-14")

(a) \(_{11}^{24}Na\)

(b) \(_{13}^{29}Al\)

(c) \({^{73}_{36}}Kr\)

(d) \(_{77}^{194}Ir\)

Short answer

a) Sodium-24.

b) Aluminium-29.

c) Krypton-73.

d) Iridium-194.

Step-by-step solution

Hyphenated form

The representation of isotopes in hyphenated form consists of the element name and its mass number. The mass number is the total number of nucleons of an atom.

The general representation of an element is:\(_Z^AX\), where \(Z\)is the atomic number of element and A is the mass number.

Atomic number of element is the number of protons and it is equal to the number of electrons in an atom.

Mass number is the total number of proton and neutron in an atom.

Subpart a)

The given nuclide is\(_{11}^{24}Na\)

The atomic mass of \(Na\)is 24.

The hyphenated form is: Sodium-24.

Subpart b)

The given nuclide \(_{13}^{29}Al\).From that we can see that the atomic mass of Al is \(29.\)

The hyphenated form is: Aluminium-29.

Subpart c)

The given nuclide is \(_{36}^{73}Kr\). The atomic mass of \(Kr\)is \(73.\)

The hyphenated form is: Krypton- \(73.\)

Subpart d)

The given nuclide is \(_{77}^{194}{\bf{Ir}}\). The atomic mass of \({\bf{I}}\) is 194.

The hyphenated form is: Iridium-194.