This layer may reach temps. of of 9000 degrees F & pressures of 45 mill. lbs per square inch.

Asthenosphere.

Explanation:

The layer of Asthenosphere of the earth has the temperature of 9000 degrees Fahrenheit and pressures of 45 mill. lbs per square inch. In this layer of earth, iron and nickel are present in the form of liquid due to very high temperature of the layer and also has a great influence on the earth's magnetic field. Asthenosphere refers to the region present at the upper mantle of Earth which highly viscous and ductile.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

може ли да зареждате повече информация, моля