Which of the Following Pairs of D-Block Metals Will Have

question 40

Multiple Choice

Which of the following pairs of d-block metals will have approximately the same atomic radii owing to the lanthanide contraction?

• A) Iron and ruthenium
• B) Ruthenium and rhodium
• C) Ruthenium and osmium
• D) Osmium and iridium
• E) Cobalt and nickel

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Definitions:

Mean

The mathematical mean of a collection of numbers, obtained by summing them up and then dividing by the total count of the numbers.

Mean Salary

The average amount of income earned by employees in a particular job, sector, or region, calculated by summing all salaries and dividing by the number of employees.

Skewed

A term describing asymmetry in the probability distribution of a real-valued random variable, indicating a deviation from the normal distribution.

Median

The middle value in a data set, which effectively divides the dataset into two halves, with one half having values above the median and the other half below.