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Multi-Electron Configurations and Orbital Diagrams

An element ha...

Question

An element has atomic number $30$ . Its cation has $2$ units positive charge. How many protons and electrons are present in the cation?

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Solution

Atomic number=number of protons= $30$
Since cation has $2$ units positive charge(two electrons removed)
no. of electrons= $30 - 2 = 28$

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