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Question
see if you can complete the following table using only what is on this page. use the references to access important values if needed for this question. element symbol p atomic symbol li 7 3 atomic number n mass number 32 protons 3 neutrons 3 electrons 15 3 item attempts remaining try another version submit answer
Step1: Identify element from symbol
The symbol Li represents lithium.
Step2: Determine atomic number
The atomic number of lithium is 3.
Step3: Find number of protons
For a neutral atom, the number of protons is equal to the atomic number, so protons = 3.
Step4: Calculate neutrons
Mass number - Atomic number = Neutrons. Given mass number = 7 and atomic number = 3, so neutrons = 7 - 3 = 4.
Step5: Determine number of electrons
For a neutral atom, number of electrons = number of protons, so electrons = 3.
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| Element | Symbol | Atomic Number | Mass Number | Protons | Neutrons | Electrons |
|---|