Normal, functioning kidneys. 1  prevent the buildup of wastes and extra fluid in the body. 2  keep levels of electrolytes, such as potassium and phosphate, stable. 3  make hormones that help regulate blood pressure. 4  make red blood cells. 5  keep bones strong.
They lack only one electron to form a complete shell or subshell, and are extremely active chemically. Chemical activity increases as you move upward in the group, fluorine being the most active element in the Periodic Table. At room temperature, fluorine and chlorine are gases, bromine is liquid, and iodine is solid.They form diatomic molecules in the pure state. The halogens are poisonous, and chlorine gas and chlorine compounds have been used as chemical weapons.hey lack only one electron to form a complete shell or subshell, and are extremely active chemically. Chemical activity increases as you move upward in the group, fluorine being the most active element in the Periodic Table. At room temperature, fluorine and chlorine are gases, bromine is liquid, and iodine is solid.
Bromine is poisonous and causes skin burns. Characteristics: Pure bromine is diatomic, Br 2. Bromine is the only nonmetallic element that is liquid at ordinary temperatures. It is a dense, reddish-brown liquid which evaporates easily at room temperature to a red vapor with a strong, chlorine-like odor.Bromine is less reactive than chlorine or fluorine but more reactive than iodine.romine is the only nonmetallic element that is liquid at ordinary temperatures. It is a dense, reddish-brown liquid which evaporates easily at room temperature to a red vapor with a strong, chlorine-like odor.