the number of protons in an atom is known as its atomic number. atoms that share the same atomic number are…

the number of protons in an atom is known as its atomic number. atoms that share the same atomic number are classified as the same chemical element. below is a model representing an atom of the chemical element lithium. what is lithiums atomic number? which of the following models also represents a lithium atom?

the number of protons in an atom is known as its atomic number. atoms that share the same atomic number are classified as the same chemical element. below is a model representing an atom of the chemical element lithium. what is lithiums atomic number? which of the following models also represents a lithium atom?

Answer

Explanation:

Step1: Count protons in lithium model

Count the number of yellow - colored (proton) particles in the given lithium atom model. There are 3 protons. Since atomic number is the number of protons, lithium's atomic number is 3.

Step2: Determine lithium - atom model

A lithium atom has an atomic number of 3, which means it has 3 protons. Any model representing a lithium atom must have 3 protons. Without seeing the other models, we know the key criterion is 3 protons.

Answer:

3 (For the second part, since no other models are provided, we can't give a specific answer. But the general rule is to look for a model with 3 protons to represent a lithium atom)