Question: In the physical sciences, an ion (/an, -n/) is a particle that has a non-zero net electrical charge, such as an atom or molecule whose total number of electrons is not equal to its total number of protons. A cation is a positively-charged ion, while an anion is negatively charged. Because of their opposite electric charges, cations and anions attract each other and readily form ionic compounds, such as salts. an anion is any atom or group of atoms with a positive charge

Answer: no

Question: The American Hockey League, the top minor league in North America required all players to wear a visor prior to the start of the 2006--07 season. The NHL ''strongly recommends'' the use of visors. In 2013, the NHL began requiring all players with less than 25 games of experience to wear visors. is it mandatory to wear a visor in the nhl

Answer: yes

Question: The deep vein of the thigh, (profunda femoris vein or deep femoral vein) is a large deep vein in the thigh. It receives blood from the inner thigh and proceeds superiorly and medially running alongside the profunda femoris artery to join with the femoral vein approximately at the level of the inferior-most portion of the ischial tuberosity. is the profunda femoral vein a deep vein

Answer:
yes