Hòa tan hoàn toàn 11,2 gam một kim loại hóa trị II vào dd H2SO4 loãng dư sau phản ứng thu được 4,48 lít khí H2(đktc). Kim loại đó là

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Vẽ .......................................................................................................................................................................................................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................... .......................................................................................................................................................................................................................................................................................................................................................................... đậu mầm hoặc vẽ gì cũng được......mà phải đẹp nha