Which products are formed (respectively) by reaction of lanthanoids with hydrogen oxide, burns in `O_(2)` and heated with sulphur

H_(2)S burns in O_(2) to form

H_(2)S burns in O_(2) to form

Which of the following product is formed by the reaction of sulphur dioxide with chlorine in the presence of sunlight ?

Hydrogen burns in air to form ____ .

When F_(2) react with H_(2)S a product (x) of sulphur is formed the difference in the oxidation state of sulphur in H_(2)S and the in the product (x) is

Name the products formed when copper is heated with concentrated sulphuric acid.

When lanthanoids (Ln) are heated with sulphur, they form corresponding ________.