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lord [1]
4 years ago
12

Which substance is a compound Li, N2, H2, CO2?

Physics
2 answers:
777dan777 [17]4 years ago
8 0
CO2.... it is a compound of oxygen and nitrogen
kupik [55]4 years ago
6 0
Carbon dioxide is a compound (CO2). The other are just considered molecules since they are bonded to themselves. Lithium (Li) is an element since it's on its own and hasn't formed a bond yet.
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4 years ago
What is the energy of the photon that could cause (a) an electronic transition from then= 4 state to the n 5 state of hydrogen a
Fiesta28 [93]

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The energy of the photon (E) for n^th orbit of the hydrogen atom is given as:

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where,

E_o = 13.6 eV

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