Multiple Choice
Dentists employ light-cured materials to fill cavities.The wavelength of electromagnetic radiation used to photopolymerize restorative materials falls in the ultraviolet or visible region,depending on the instrument employed.Which of these wavelengths is in the UV region?
A) 31 nm
B) 350 nm
C) 430 nm
D) 1030 nm
Correct Answer:
Verified
Correct Answer:
Verified
Q2: An oxygen molecule has a mass of
Q3: For the fourth-shell orbital shown below,what are
Q5: The number of orbitals having the quantum
Q11: Which of the following have the same
Q15: For a multielectron atom,a 3s orbital lies
Q37: Of the following,which atom has the largest
Q39: According to the Balmer-Rydberg equation,transitions from n
Q78: The spheres below represent atoms of Li,Be,B,and
Q82: What is the general valence-electron ground-state electron
Q96: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which of the