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.
HCl or Hydrogen chloride is a colour less gas at room temperature.Upon contact with water vapour it forms white fumes of HCl acid.Both gas and liquid form has same formula. So the word HCl is abstract.