Question

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

Explanation:

Step1: Identify isotope name

The number above Li is the mass - number. So it's Lithium - 7.

Step2: Determine number of protons

The number below Li is the atomic number which is equal to the number of protons. So number of protons = 3.

Step3: Calculate number of neutrons

Neutrons = Mass number - Protons. So neutrons = 7 - 3=4.

Step4: Determine mass

The mass number is 7, so mass is approximately 7 atomic mass units.

Step5: Find natural abundance

Lithium - 7 has a natural abundance of about 92.5%.

Answer:

Blank 1: 7
Blank 2: 3
Blank 3: 4
Blank 4: 7
Blank 5: 92.5