HYDROGEN: (1) as a gas how does hydrogen behave when released in the atmosphere: ; how does the gas behave if ignited: (watch this video of the Hindenberg and explain what appears to have happen to this zepplin or blimp: :

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it means there are 3 atoms of oxygen

10 years is the answer

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

explanation: