Answer:
Al2S3
Step-by-step explanation:
Al2S3 has ions which have a higher magnitude of charge compared to BeCl2. This higher charge creates stronger attractive forces between molecules, holding them together even at high temperatures. Another simple way to compare the melting points is to multiply the charges of the ions together and compare those values. BeCl2 would be 2*1 because of Be2+ and Cl (1)-. Al2S3 would be 2*3 because of S2- and Al3+. Since 2*3 is more than 2*1, Al2S3 has a higher melting point. I think this is a repeat question