Problem 15 - Chemistry: The Central Science in SI Units, Global Edition

Question

Give the chemical symbol or name for the following elements, as appropriate: (a) helium, (b) platinum, (c) cobalt, (d) tin, (e) silver, (f) \(\mathrm{Sb},(\mathbf{g}) \mathrm{Pb}\) (h) Br, (i) \(V\), \((\mathbf{j}) \mathrm{Hg}\).

Step-by-Step Solution

Answer

(a) He, (b) Pt, (c) Co, (d) Sn, (e) Ag, (f) Antimony, (g) Lead, (h) Bromine, (i) Vanadium, (j) Mercury.

Step 1: (a) Helium

Helium is an element with the chemical symbol He.

Step 2: (b) Platinum

Platinum is an element with the chemical symbol Pt.

Step 3: (c) Cobalt

Cobalt is an element with the chemical symbol Co.

Step 4: (d) Tin

Tin is an element with the chemical symbol Sn.

Step 5: (e) Silver

Silver is an element with the chemical symbol Ag.

Step 6: (f) Sb

Sb stands for the element Antimony.

Step 7: (g) Pb

Pb stands for the element Lead.

Step 8: (h) Br

Br stands for the element Bromine.

Step 9: (i) V

V stands for the element Vanadium.

Step 10: (j) Hg

Hg stands for the element Mercury.

Key Concepts

Element Names

Element names are often derived from various sources, such as Latin and Greek languages, and even from names of scientists or places. These names help in identifying the elements effortlessly in scientific communication. For instance, the element tin is derived from its Latin name "stannum," which is why its chemical symbol is Sn. Similarly, silver's symbol, Ag, comes from its Latin name "argentum."
Understanding the origin of these names can improve your memory and recognition of elements. Frequently, learners find it easier to remember elements by associating the element's name with its symbol.
Some names like helium and cobalt are straightforward because they share their name with their symbol - He and Co respectively. On the other hand, elements like mercury, with the symbol Hg, derive their initials from their historical names; in this case, from the Greek "hydrargyrum."
Knowing the systematic naming of elements enriches your understanding and helps you perform better in identification tasks.

Periodic Table

The periodic table is a systematic arrangement of all known elements. It organizes elements by increasing atomic numbers and groups them based on similar properties. Understanding the layout of the periodic table can enhance your grasping of chemical symbols and element properties.
Elements in the same group (vertical columns) typically share common characteristics. For example, helium (He) is in group 18, known for noble gases that are generally inert. Bromine (Br), part of group 17, is a halogen which are known for high reactivity.

• Group Differences: Elements are placed in groups 1 to 18, with similar chemical properties in a group.
• Periods: Horizontal rows that indicate increasing atomic numbers.
• Blocks: Segmented as s, p, d, and f blocks which relate to electron configurations.

By using the periodic table, you can efficiently identify elements and predict their reactions and compounds they might form. This makes studying chemistry more organized and less overwhelming.

Element Identification

Element identification is crucial in chemistry, allowing scientists to predict reactions and properties of substances. Identifying an element involves knowing its chemical symbol and its place in the periodic table. For instance, knowing that "Pb" is lead allows you to understand its heavy metal properties and its period in the table.
Elements typically have unique one or two-letter symbols; the first in uppercase, and if present, the second in lowercase. This standardization helps in easily recognizing elements across scientific texts and instructions.
Practicing element identification involves regular review of common symbols such as:

• Pt for Platinum
• Co for Cobalt
• Sb for Antimony

When learning new elements, try to associate the symbol with the name actively, whether through flashcards or periodic table quizzes.
By refining your skills in element identification, it can greatly aid in your understanding of chemical reactions, compound formation, and broader concepts in chemistry.