The total numver of electrons accomodated in the forth shell is.

18 valence electrons in the 4th shell

Explanation:

1 - 2 electrons

2 - 8 electrons

3 - 8 electrons

4 - 18 electrons

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

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explanation:

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.