K-shell

[ key-shel ]

/ ˈkeɪˌʃɛl /

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noun Physics.

the first shell of electrons surrounding the nucleus of an atom and containing, when filled, two electrons having principal quantum number 1.

QUIZ

CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?

Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

TAKE THE QUIZ TO FIND OUT

Compare L-shell, M-shell, N-shell.

Origin of K-shell

First recorded in 1965–70

Words nearby K-shell

Kryvyi Rih, KS, K selection, KSG, Kshatriya, K-shell, ksi, K star, KStJ, Kt, Kt. Bach.