Complete the Following Chart, in Order from Left to Right

question 120

Multiple Choice

Complete the following chart, in order from left to right $\begin{array}{|c|c|c|c|c|}\hline \text { Isotope } & \text { Mass Number } & \text { Protons } & \text { Neutrons } & \text { Electrons } \\\hline & 40 & 19 & & 19 \\\hline\end{array}$

• A) (⁴⁰Zr), 21
• B) (¹⁹K), 40
• C) (²¹K), 19
• D) (⁴⁰K), 21
• E) (³⁸Sr), 19

---

Definitions:

Grey Line

A phenomenon in radio communications where enhanced propagation conditions occur at dawn and dusk along the terminator line.

Linear Equations

Equations where the highest exponent of the variable(s) is one, resulting in a straight line when graphed.

Method Of Elimination

A technique for solving systems of equations by eliminating variables to solve for the others.

Fractions

Mathematical expressions representing the division of one integer by another, comprising a numerator and a denominator.