\(2M+Cl2-->2MCl\)
\(mCl2=m_{MCl2}-m_M=11,7-4,6=7,1\left(g\right)\)
\(n_{Cl2}=\frac{7,1}{71}=0,1\left(mol\right)\)
\(nM=2n_{Cl2}=0,2\left(mol\right)\)
\(M_M=\frac{4,6}{0,2}=23\left(Na\right)\)
Ta có:
\(n_M=n_{MCl}\)
\(\Rightarrow\frac{4,6}{M}=\frac{11,7}{M+35,5}\)
\(\Rightarrow M=23\left(Na\right)\)
Vậy kim loại là Natri (Na)