Consider the Two Elements, Sodium (Na) and Magnesium (Mg), Which

question 215

Multiple Choice

Consider the two elements, sodium (Na) and magnesium (Mg) , which occupy the same row in the periodic table of elements. Sodium and magnesium atoms have:

• A)a different number of orbitals.
• B)the same atomic number.
• C)different atomic masses.
• D)the same number of electrons in their outermost orbitals.
• E)different atomic masses and the same number of electrons in their outermost orbitals.

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Definitions:

Midrange

The arithmetic average of the maximum and minimum values in a data set.

Variance

A measure of the dispersion or spread of a set of data points, indicating how much they differ from the mean.

Range

The difference between the highest and lowest values in a data set, indicating the spread or dispersion of the set.

Chebyshev's Theorem

A statistical theorem that gives an inequality for assessing the probability that a random variable differs from its mean.