An unknown metal M reacts with Sulphur to form a compound with the formula M2S3, if 3.12g of M reacts with 2.88g of sulphur, what are the names of M and M2S3

An unknown metal M reacts with Sulphur to form a compound with the formula M2S3, if 3.12g of M reacts with 2.88g of sulphur, what are the names of M and M2S3