Se atom has a mass number of 79 determine the number of neutrons and protons and electrons in the neutral isotope

The number of neutrons, protons and electrons in the neutral isotope of Se atom is 45, 34 and 34, respectively.

Explanation:

Selenium has six natural isotopes. Originally, Selenium or Se atom has an atomic number of 34. As the atomic number of any element is equal to the number of electrons in that element. So the number of electrons in the original or stable Se atom is 34. Also we know that an isotope of an element is formed when there is a change in the number of neutrons. So the number of electrons of the stable and isotopic element will be same. Thus, the number of electrons in Se isotope with mass number 79 is 34.

As we know that mass number is the sum of number of protons and neutrons, so by knowing the number of protons we can determine the number of neutrons. Since the number of protons and electrons are same in stable and isotopic states. So here also the number of protons and electrons will be equal to 34. The remaining number of neutrons can be determined by subtracting the atomic number from the mass number. So the number of neutrons will be 79-34 = 45. Thus, the isotope of Se-79 has 45 number of neutrons, 34 number of protons and 34 number of electrons.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

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