MATCHING
Consider the image below which represents an individual block on the periodic table. Answer the following questions with the appropriate letter from the list given below.

-What does the "22" represent?

Question

MATCHING
Consider the image below which represents an individual block on the periodic table.  Answer the following questions with the appropriate letter from the list given below.

-What does the "22" represent?

Quizplus · Accepted Answer

The "22" represents the atomic number, which is the number of protons found in the nucleus of the atom. It determines the unique identity of each element on the periodic table.

Answer: A, C 
 The best choices are A and C. Atomic number (A) is important because it uniquely identifies the element, while the chemical symbol (C) provides a shorthand way to represent the element in chemical equations and other contexts. Atomic weight (B) is the average mass of an element, taking into account its different isotopes, but is not necessary for identifying the element. Mass number (D) is the sum of the protons and neutrons in the nucleus, and is helpful for determining the number of neutrons in an atom, but is not as important for identifying the element. Chemical name (E) may be helpful for identifying the element in some cases, but it is not as universally used as the other choices.

MATCHING Consider the Image Below Which Represents an Individual Block on on the Periodic