मोफोणते ओळखा D मायाले परिक्षामयीत विटुतताहकतामयीन इक्विट्रॉन गतिमान हितात. २ 2.
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In chemistry, an element is a pure substance consisting only of atoms that all have the same number of protons in their atomic nuclei. Unlike chemical compounds, chemical elements cannot be broken into simpler substance by chemical means .
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