ICSE /Class 9
Chemistry MCQ Based On Hydrogen from water dilute acids and alkalis
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ICSE Class 9 Chemistry Hydrogen from water dilute acids and alkalis
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3+1
Toxic gas
Atomic number 80.
They form soluble complexes with Cationic species.
Consists of one proton and one electron.
The divalent radical formed from two separate hydrogen atoms.
Sodium ions are exchanged with \\(Ca^{2+}\\) ions.
Atomic number 20 and 12.
At 4°C
Metals
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