Give the ion symbol for the the ion that has 15 protons and 18 electrons

The symbol of the ion is

Explanation:

An ion is formed when a neutral atom looses or gains electrons.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

We are given:

Number of protons = 15

Number of electrons = 18

Charge = Number of protons - Number of electrons = 15 - 18 = -3

The element having 15 protons is phosphorus. So, the symbol of the ion is ion

Hence, the symbol of the ion is

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

the answer is d. 74.02