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A A

                                    

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A     A They have slippery feeling They produce salt by neutralization reaction They turn blue litmus paper to red They produce hydrogen gas when react with metals

Detaylı

A A

A     A have the same atomic and mass numbers have the same number of protons and neutrons C ) have different number of protons D ) have the same number of neutrons but different number of protons B)

Detaylı