(a) The symbol and atomic number of the heaviest alkaline...

(a) The symbol and atomic number of the heaviest alkaline earth metal are $\longrightarrow$ and (b) The symbol and atomic number of the lightest metalloid in Group $4 \mathrm{~A}(14)$ are and (c) Group $1 \mathrm{~B}(11)$ consists of the coinage metals. The symbol and atomic mass of the coinage metal whose atoms have the fewest electrons are

(a) The symbol and atomic number of the heaviest alkaline earth metal are $\longrightarrow$ and
(b) The symbol and atomic number of the lightest metalloid in Group $4 \mathrm{~A}(14)$ are
and
(c) Group $1 \mathrm{~B}(11)$ consists of the coinage metals. The symbol and atomic mass of the coinage metal whose atoms have the fewest electrons are

Key Concepts

Atomic Number and Atomic Mass

Atomic number denotes the number of protons (and for a neutral atom, electrons) in an element and serves as a unique identifier on the periodic table, while atomic mass represents the weighted average mass of an element’s isotopes. Distinguishing between these two properties is important when identifying elements, whether by their position in a group or by comparing relative masses.

Chemical Symbols

Chemical symbols are one- or two-letter abbreviations that represent elements on the periodic table. They are standard shorthand representations used in chemical equations and literature, and knowing how to interpret these symbols is essential for communicating elemental information concisely.

Periodic Table Organization

This concept relates to how elements are arranged in the periodic table according to their increasing atomic numbers, electron configurations, and recurring chemical properties, which are organized into groups and periods. Understanding this arrangement helps in predicting element behavior and identifying trends among different element families.

Element Groups and Families

This concept involves the classification of elements into specific groups or families such as the alkaline earth metals, metalloids, and coinage metals. Each group shares characteristic properties; for example, members of a particular group often have similar reactivity or physical properties due to analogous electron configurations.

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