M is an element which is out of Cu,Fe,Al,Na. It shows the following properties: (i) One of its ore is rich in M_2O_3. (ii) M_2O_3 is not affected by water. (iii) It corrodes easily. (iv) It forms two chlorides MCl_2 and MCl_3. Identify 'M'

M is an element which is out of Cu,Fe,Al,Na. It shows the following pr

1.	M is an element which is out of Cu,Fe,Al,Na. It shows the following properties: (i) One of its ore is rich in M_2O_3. (ii) M_2O_3 is not affected by water. (iii) It corrodes easily. (iv) It forms two chlorides MCl_2 and MCl_3. Identify 'M'
Answer» Solution :As the metal M FORMS oxide `M_2O_3` it is trivalent. Out of the metals listed, only FE and AL are trivalent. `M_2O_3` is not AFFECTED by water, so M can be out of Fe or Al. Fe and Al both corrode easily. Out of Al and Fe, only Fe can be form DIVALENT chloride, so the element M is Fe.