Question

question 5 (1 point) build a lithium atom with the following symbol and fill in the table below it. name lithium- 7 number of protons 3 number of neutrons 4 mass 7 natural abundance % stable? stable blank 1: 7 blank 2: 3 blank 3: 4 blank 4: 7 blank 5:

Explanation:

Step1: Identify element symbol meaning

The bottom - left number in the symbol $_{3}^{7}\text{Li}$ is the atomic number (number of protons), which is 3. The top - left number is the mass number (sum of protons and neutrons), which is 7.

Step2: Calculate number of neutrons

Number of neutrons = Mass number - Number of protons. So, $7 - 3=4$.

Step3: Recall natural abundance of Lithium - 7

The natural abundance of Lithium - 7 is approximately 92.23%.

Answer:

Name	Lithium - 7
Number of Neutrons	4
Mass	7
Natural abundance	92.23
Stable?	Stable