The Atomic Number of an Atom of ⁸⁰_{Br Is ________}

question 171

Multiple Choice

The atomic number of an atom of ⁸⁰_{Br is ________.}

• A)115
• B)35
• C)45
• D)73
• E)80

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Definitions:

\(6 i + 2\)

A complex number consisting of a real part, 2, and an imaginary part, \(6i\), where \(i\) is the imaginary unit.

\(\sum _ { i = 0 } ^ { 5 }\)

A summation notation representing the addition of a sequence of numbers, from the index i equals 0 to i equals 5.

\(n ^ { 2 }\)

Represents the square of a number n, calculated as n multiplied by itself.

\(( n - 2 ) !\)

The factorial of the quantity \(n-2\), representing the product of all positive integers less than or equal to \(n-2\).