Question

Write the names and symbols of the elements with the following atomic numbers: a. 3 b. 9 c. 20 d. 30 e. 10 f. 14 g. 53 h. 8

Short answer

3: Li, 9: F, 20: Ca, 30: Zn, 10: Ne, 14: Si, 53: I, 8: O

Step-by-step solution

- Identify Element with Atomic Number 3

Look up the element with atomic number 3. The element with atomic number 3 is Lithium, and its symbol is Li.

- Identify Element with Atomic Number 9

Find the element with atomic number 9. The element with atomic number 9 is Fluorine, and its symbol is F.

- Identify Element with Atomic Number 20

Determine the element with atomic number 20. The element with atomic number 20 is Calcium, and its symbol is Ca.

- Identify Element with Atomic Number 30

Locate the element with atomic number 30. The element with atomic number 30 is Zinc, and its symbol is Zn.

- Identify Element with Atomic Number 10

Establish the element with atomic number 10. The element with atomic number 10 is Neon, and its symbol is Ne.

- Identify Element with Atomic Number 14

Ascertain the element with atomic number 14. The element with atomic number 14 is Silicon, and its symbol is Si.

- Identify Element with Atomic Number 53

Identify the element with atomic number 53. The element with atomic number 53 is Iodine, and its symbol is I.

- Identify Element with Atomic Number 8

Recognize the element with atomic number 8. The element with atomic number 8 is Oxygen, and its symbol is O.

Key concepts

Atomic Number

The atomic number of an element is crucial for identifying it. It tells you how many protons are in the nucleus of an atom of that element. Each element has a unique atomic number.
For example, with an atomic number of 3, you have lithium because it has three protons in its nucleus.
Knowing the atomic number allows you to determine the element's position on the periodic table and helps in understanding its chemical properties.

• The atomic number is usually found at the top of an element's box in the periodic table.
• The higher the atomic number, the heavier the element (generally).

Element Symbols

Element symbols are shorthand notations for the chemical elements. Each element has a one- or two-letter symbol, which is usually derived from its English or Latin name.
For instance, the symbol for Oxygen is 'O', and for Sodium, derived from its Latin name 'Natrium', the symbol is 'Na.'
These symbols are used universally to avoid language barriers in scientific writing and communication.

• Symbols are always written with the first letter capitalized, and if there is a second letter, it is lowercase.
• Understanding these symbols is essential for writing chemical equations and for studying chemistry in general.

Periodic Table

The periodic table is an organized chart of all known elements. It arranges elements based on their atomic number, electron configurations, and recurring chemical properties.
Elements are listed in order of increasing atomic number. Elements in the same column (group) have similar chemical behaviors.
The periodic table is a vital tool in chemistry, helping predict the characteristics and behaviors of elements.

• It is divided into metals, nonmetals, and metalloids.
• Rows are called periods and columns are called groups.
• Finding the position of an element on the table can provide a wealth of information about its reactivity, state at room temperature, and more.