Question

1. which of the following are diatomic elements? select all that apply. hydrogen boron iodine bromine

Explanation:

Diatomic elements are elements that exist as molecules composed of two atoms. The diatomic elements include hydrogen ($\ce{H_2}$), nitrogen ($\ce{N_2}$), oxygen ($\ce{O_2}$), fluorine ($\ce{F_2}$), chlorine ($\ce{Cl_2}$), bromine ($\ce{Br_2}$), and iodine ($\ce{I_2}$) (remembered by the mnemonic "HONClBrIF"). Boron is not a diatomic element; it exists as a solid with a more complex structure. So hydrogen, bromine, and iodine are diatomic.

Answer:

• hydrogen (the checkbox next to hydrogen should be selected)
• bromine (the checkbox next to bromine should be selected)
• iodine (the checkbox next to iodine should be selected)
• boron (the checkbox next to boron should not be selected)