Which one of the following statements is true for an atom that has full s and p orbitals in its outermost energy level?

a. it's highly reactive only with halogens.
b. it has a stable octet and is unreactive.
c. it's highly reactive only with alkali metals.
d. it can be combined with most elements.

B. It has a stable octet and is unreactive.

Explanation:

s orbital contains 2 electrons and p contains 6. When the outermost energy level of an element has a total of 8 electrons we call it stable octet and it is unreactive. Therefore the answer is B

B.

Explanation:

For example the element with configuration

1s2 2s2 2p6 which is Neon, an inert.

It has a stable 8 electrons in its outermost shell which makes it stable.

pla·gia·rism

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.