To fill the valence shell, an electrically neutral, unbonded atom with atomic number 8 must add to fill the valence shell, an electrically neutral, unbonded atom with atomic number 8 must add 2 electrons. 3 electrons. 8 electrons. 1 electron. can't tell without knowing which element it is.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro