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Selina Solutions Class 9 Chemistry Solutions for Exercise 5C in Chapter 5 - Chapter 5 The Periodic Table
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(a) How do alkaline earth metals occur in nature?
(b) Write the electronic configuration of the first two alkaline earth metals.
Answer:
a) In nature, earth metals occur in the combined state as they are very reactive metals.
b)
\begin{array}{l} 4 \mathrm{Be}: 1=2 s^{2} \\ 12 \mathrm{Mg} \cdot 1 \mathrm{s}^{2} 2 \mathrm{s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{s} \end{array}
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