Which of the following elements has its highest energy electrons in an "s" atomic orbital? radiium (ra) neon (ne) aluminum (al) lanthanum (la)

The correct answer is Radium (Ra).

Explanation:

Energy level having highest value of principle quantum number which is 'n' will have the highest energy electrons.

For the given options:

Radium (Ra): The number of electrons present in this element are 88 and electronic configuration of this element is

It has 2 electrons in 's' orbital having n = 7.

Neon (Ne): The number of electrons present in this element are 10 and electronic configuration of this element is

It has 2 electrons in 's' orbital having n = 2.

Aluminium (Al): The number of electrons present in this element are 13 and electronic configuration of this element is

It has 2 electrons in 's' orbital having n = 3.

Lanthanum (La): The number of electrons present in this element are 57 and electronic configuration of this element is

It has 2 electrons in 's' orbital having n = 6.

Hence, the correct answer is Radium (Ra).

a. hope i'm right

explanation:

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.