The electron configuration for helium (he) is shown below. 1s2 which diagram shows the correct distribution of electrons in the electron shells of a helium atom? mc024-1.jpg mc024-2.jpg mc024-3.jpg mc024-4.jpg mark this and return

The distribution of electrons around helium atom is given in the image attached below.

Explanation:

Helium is the 2nd element of the periodic table having electronic configuration of

The electrons are arranged in orbits around the atom.

In the given element, 2 electrons are arranged in the lowest energy orbit, which is '1s'

Hence, the distribution of electrons in helium atom is shown below.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

c. is the answer

by love gaming