What is the evidence of a chemical reaction when the fireworks go off

Answer;

-Their metallic properties increase and their atomic radii increase

Explanation;

-Group 15 is also called the nitrogen family. It consists of the elements nitrogen, phosphorus, arsenic, antimony, moscovium and bismuth. The atomic radius of these elements increases from Nitrogen to Bismuth.

-Moving down the group, the ionic radii, and atomic radii increases. This is because of the expansion of another main energy level in each progressive element.

-Moving down a group, metallic character increases. On the other hand, the ionization enthalpy of the elements decreases due to an increase in their nuclear size.

Answer is Ca which is a metal.

Explanation: Milk is composed of many elements such as Calcium (Ca), Magnesium(Mg), Phosphorus(P), Potassium (K), Zinc(Zn) ans Selenium(Se). The major component present is Ca.

Calcium present helps in the formation of bones and teeth and maintaining it to keep healthy.

Elements which can loose electrons easily to obtain a stable configuration is called as a metal.

Calcium is a metal as it can easily loose 2 electrons to obtain a stable configuration.

Final answer:

Calcium, a metal, is the element in milk that makes it beneficial for health. It contributes to healthy bones, teeth, and the proper functioning of various body organs. Metalloids or semimetals like boron or silicon are not responsible for the health benefits of milk.

Explanation:

The element that makes milk good for health is Calcium. Calcium is a metal that is needed by the body for healthy bones, teeth, and proper function of the heart, muscles, and nerves. It is a representative metal that shows good conduction of heat and electricity. Milk is a primary source of Calcium, which is why it is considered beneficial for health.

On the other hand, elements such as boron, silicon, germanium, arsenic, antimony, and tellurium are considered metalloids or sometimes semimetals, which exhibit properties between metals and nonmetals. However, these are not the elements responsible for the health benefits of milk.

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