On the Periodic Table, Beryllium Sits Above Magnesium and to the Right

question 11

Multiple Choice

On the periodic table, beryllium sits above magnesium and to the right of lithium. Given that magnesium has two electrons in its outer shell and lithium has one, how many electrons would you predict beryllium has in its outer shell?

• A) One
• B) Two
• C) Three
• D) Four

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Definitions:

Quartile

A quartile is a type of statistical measure that divides a data set into four equal parts, revealing the spread and tendencies of the data.

Chebyshev's Theorem

A statistical rule stating for any real number k greater than one, at least (1-1/k^2) of the distribution's values lie within k standard deviations from the mean.

Standard Deviations

A metric indicating the degree of spread or variability in a collection of numbers, highlighting the distance of individual values from the central mean.

Chebyshev's Theorem

A statistical theorem which states that for any real number greater than one, a certain proportion of values in any data set will be close to the mean, based on the number of standard deviations specified.