STANDARD Chemistry Atomic Radius MCQ Question
Arrange the following in increasing order of their atomic radius: Na, K, Mg, Rb
Mg < K < Na < Rb
Mg < Na < K < Rb
Mg < Na < Rb < K
Na < K < Rb < Mg
Correct Answer
Detailed Explanation
The correct order is based on the trend in a period and a group. Atomic radius increases down a group. Mg is smaller than Na, K is larger than Na, and Rb is the largest.
Found an issue with this question?
Related Questions
More from Periodic Table
The order of size of metal ions is, Li⁺ < Na⁺ < K⁺ < Rb⁺ < Cs⁺ Since the hydration energy is inversely proportional to the size. So, the order of hydr...
Fluorine is the most electronegative element, it shows only (-1) state therefore fluorine will not undergo disproportionation.
Assertion: Ionisation enthalpy of beryllium is higher than that of boron. Reason: Across the period, from left to right, ionization enthalpy decrease...