Questions: An unknown element contains 56 protons, 54 electrons, and has a mass number 135. What is the charge on this ion? -2 -1 +2 +1

An unknown element contains 56 protons, 54 electrons, and has a mass number 135. What is the charge on this ion? -2 -1 +2 +1
Transcript text: An unknown element contains 56 protons, 54 electrons, and has a mass number 135. What is the charge on this ion? $-2$ $-1$ $+2$ +1
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Solution

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Solution Steps

Step 1: Determine the Number of Protons and Electrons

The element has 56 protons and 54 electrons.

Step 2: Calculate the Net Charge

The charge of an ion is determined by the difference between the number of protons (positively charged) and electrons (negatively charged).

\[ \text{Net charge} = \text{Number of protons} - \text{Number of electrons} \]

Substituting the given values:

\[ \text{Net charge} = 56 - 54 = +2 \]

Final Answer

\(\boxed{+2}\)

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