Which of the following elements have the same number of energy levels/orbitals? оа
Ob
Ос
Calcium (Ca) and Magnesium (Mg)
Magnesium (Mg) and Sodium (Na)
Sodium (Na) and Lithium (Li)

C. Sodium (Na) and Lithium (Li)

Explanation:

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.