Question

Write the symbol for every chemical element that has atomic number greater than 8 and atomic mass less than 22.9 u.

Answer 1

Step-by-step explanation:

1) Oxygen (O) - Atomic Number: 8, Atomic Mass: 16.00 u

2) Fluorine (F) - Atomic Number: 9, Atomic Mass: 18.99 u

3) Neon (Ne) - Atomic Number: 10, Atomic Mass: 20.18 u

Answer 2

The chemical elements with atomic number greater than 8 and atomic mass less than 22.9 u are as follows: 1. Carbon (C) - Atomic number: 6, Atomic mass: 12.01 u 2. Nitrogen (N) - Atomic number: 7, Atomic mass: 14.01 u 3. Oxygen (O) - Atomic number: 8, Atomic mass: 16.00 u These elements fit the criteria of having an atomic number greater than 8 and an atomic mass less than 22.9 u. Carbon (C) has an atomic number of 6 and an atomic mass of 12.01 u. It is a nonmetal that is essential for life and is found in all living organisms. Carbon is known for its ability to form a wide variety of compounds due to its unique bonding properties. Nitrogen (N) has an atomic number of 7 and an atomic mass of 14.01 u. It is a nonmetal that is abundant in the Earth's atmosphere, making up around 78% of the air we breathe. Nitrogen is an essential component of proteins and nucleic acids. Oxygen (O) has an atomic number of 8 and an atomic mass of 16.00 u. It is a highly reactive nonmetal that is essential for respiration and combustion. Oxygen is the most abundant element in the Earth's crust and is responsible for supporting life on Earth.

Step-by-step explanation: