The bonds present in carbon tetrachloride (CCI) are A. covalent
B. ionic
C. metallic
D. van der Waals​

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community