How many days will pass between a new moon and a full moon?

The longest duration between full moon to new moon (or new moon to full moon) lasts about 15 days and 14.5 hours, while the shortest duration between full moon to new moon (or new moon to full moon) lasts only about 13 days and 22.5 hours. New Moon appears higher on summer solstice than on winter solstice.

The sign of the charge on an ion indicates the number of electrons gained or lost by the neutral atom. An ion with +1, +2 or +3 charge, has lost 1, 2 or 3 electrons respectively. An ion with a -1, -2, or -3 charge has gained 1, 2or 3 electrons respectively.

Note: The question did not state the ions in question.

Explanation:

Ions are formed when neutral atoms gain or lose electrons. There are two types of ions; cations and anions.

Cations are positively-charged ions which are formed when neutral atoms lose electrons. Cations are formed by metallic elements as they have a greater tendency to give up their electrons in order to form ions, i.e. they are electropositive elements. Examples of cations include Na+, Ca²+, Al³+, Fe³+, etc.

Anions are negatively-charged ions which are formed when neutral atoms gain electrons. Anions are formed by non-metallic elements as they have a greater tendency to accept electrons in order to form ions, i.e. they are electronegative elements. Examples of anions include; Cl-, O²-, N³-, etc.

The sign of the charge on an ion indicates the number of electrons gained or lost by the neutral atom. An ion with +1, +2 or +3 charge, has lost 1, 2 or 3 electrons respectively. An ion with a -1, -2, or -3 charge has gained 1, 2or 3 electrons respectively.