Explain how a lithium ion develops a +1 charge when it loses one electron.

it turns from an atom origrionally to an ion

Explanation:

lithium atoms contain 3 protrons and 3 electrons. When it loses an electron, it is now an ion with more positive protons than electrons, meaning it is no longer balanced and has a +1 charge that was originally cancelled out by the electron we lost

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

the awnser is group 12