Chemistry multiple choice questions about elements, electrons, periodic table groups, metalloids, and the chemical formula of water.

Understand the Problem

The image contains several multiple-choice chemistry questions. Here's a breakdown:

• Question 21: Asks to identify the element with 11 protons.
• Question 22: Asks to identify the number of electrons in a neutral atom of neon.
• Question 23: Asks to identify the periodic table group that typically forms three bonds with other atoms.
• Question 24: Asks to identify the general property of metalloids.
• Question 25: Asks to identify the chemical formula of water.

These all test knowledge of basic chemistry concepts like atomic structure, the periodic table, and chemical formulas.

More Information

• Question 21: The number of protons defines the element. Sodium has 11 protons.
• Question 22: In a neutral atom, the number of electrons equals the number of protons. Neon has an atomic number of 10, so it has 10 electrons.
• Question 23: Group 15 elements (also known as the nitrogen family) typically form three bonds.
• Question 24: Metalloids have properties of both metals and nonmetals.
• Question 25: Water consists of two hydrogen atoms and one oxygen atom.

Tips

Remember that the number of protons defines the element and that in a neutral atom, the number of electrons is equal to the number of protons.

Sources

• Regents Chemistry Multiple Choice Practice Questions By Topic - transformationtutoring.com
• Periodic Table MCQ Quiz: Questions And Answers - ProProfs - proprofs.com
• Nonmetals and Metalloids Examples of Multiple Choice Questions 1. - chem.tamu.edu