How many electrons will Br (Bromine) most likely be gained or lost

The atomic number for bromine is 35, which means it has 35 protons in its atomic nuclei . A neutral bromine atom would also have 35 electrons. In order for a bromine atom to become a 1 − bromide ion, it would have to gain an additional electron. Below is the Lewis dot structure for a neutral bromine atom, which has seven valence electrons.

Explanation:

13

Explanation:

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.