We Know that Number of Protons in an Element's Atom Indicates the Atomic Number of the Element.
Given : The Atom of Element A has 11 Protons
⇒ The Atomic Number of Element A is 11
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The conclusion we can make about these two organisms,
Is C. They're different species with no evolutionary relationship.
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Its phosphorus (P)In writing the electron configuration for Phosphorus the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Phosphorous go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining three electrons. Therefore the Phosphorus electron configuration will be 1s22s22p63s23p3.
Answer: This isotope is oxygen-17.