Vitamin B12 deficiency can cause weakened bones and may lead to hip fractures. Severe vitamin B12 deficiency can cause neurological problems, such as confusion, dementia, depression, and memory loss. Other symptoms of vitamin B12 deficiency involve the digestive tract.
â¦The answer is Bromine because the question clearly states, at room temperature this halogen is a liquid, and on any periodic table, bromine is a different colour to the other elements showing that it is a liquid or it melts close to room temperature.
Gallium (Ga, element 31), with a melting point of 85.60 Fahrenheit (29.80 Celsius), and cesium (Cs, element 55), with a melting point of 830 Fahrenheit (28.40 Celsius), are liquids at slightly above room temperature. Source(s): http://www.enotes.com/science-fact-finde...