What are the names of the following elements.
a. C
c. Au
b. Cl
d. Sr
The correct answer and explanation is:
Here are the names of the elements based on the given symbols:
a. C – Carbon
b. Cl – Chlorine
c. Au – Gold
d. Sr – Strontium
Explanation:
- Carbon (C) is a nonmetal element with atomic number 6. It is essential for life, forming the basis of organic chemistry. Carbon atoms can bond with each other and other elements, forming a vast array of compounds, from gases like carbon dioxide to complex molecules like proteins and DNA.
- Chlorine (Cl) is a halogen element with atomic number 17. It is widely used in disinfection and sanitation, particularly in water treatment. Chlorine forms various compounds, including salts like sodium chloride (common table salt), and is a key element in producing bleach and other disinfectants.
- Gold (Au) has the atomic number 79. It is a precious metal known for its lustrous yellow appearance, malleability, and resistance to corrosion. Gold has been used for jewelry, currency, and in electronics due to its excellent conductivity and non-reactivity. The symbol Au comes from the Latin word “aurum,” meaning “shining dawn.”
- Strontium (Sr) is an alkaline earth metal with atomic number 38. It is commonly used in fireworks and flares to produce red-colored flames. Strontium compounds also find use in the production of magnets, and strontium-90, a radioactive isotope, is used in certain medical treatments and as a power source in some types of batteries.
Each of these elements plays a significant role in different scientific, industrial, and everyday applications, making them integral to various fields.