Multiple Choice
Which of the following elements is not diatomic in its standard elemental form?
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2. Atoms & Elements
Periodic Table: Elemental Forms
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Which of the following is NOT a diatomic element in its standard elemental form?
A
Chlorine (Cl_2)
B
Helium (He)
C
Nitrogen (N_2)
D
Oxygen (O_2)
Verified step by step guidance1
Recall that diatomic elements are molecules composed of two atoms of the same element bonded together in their standard elemental form.
Identify the common diatomic elements: Hydrogen (H_2), Nitrogen (N_2), Oxygen (O_2), Fluorine (F_2), Chlorine (Cl_2), Bromine (Br_2), and Iodine (I_2).
Examine each option to see if it naturally exists as a diatomic molecule: Chlorine (Cl_2), Nitrogen (N_2), and Oxygen (O_2) are all diatomic in their elemental forms.
Recognize that Helium (He) is a noble gas and exists as a monatomic element, meaning it is composed of single atoms, not molecules.
Conclude that Helium (He) is NOT a diatomic element in its standard elemental form.
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