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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
What is an electron? State its relative mass and charge.
✓

Answer

Electron is a negatively charged particle found in the atoms of all elements.
The relative mass of an electron is $\frac{1}{1840\text{u}}$
A charge of -1 is carried by an electron.

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