Which of the following is the outermost shell for elements of period 2...
For the second period elements, L-shell is the outermost shell.
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Which of the following is the outermost shell for elements of period 2...
Elements having 2 valence electrons are placed in period 2 . So, the outermost shell of these elements is L shell and option (b) is the correct answer.
Which of the following is the outermost shell for elements of period 2...
Understanding Electron Shells
In chemistry, the structure of an atom is organized into shells, which are layers surrounding the nucleus where electrons reside. The shells are designated by letters: K, L, M, and N.
Period 2 Elements
Elements in Period 2 of the periodic table include lithium (Li), beryllium (Be), boron (B), carbon (C), nitrogen (N), oxygen (O), fluorine (F), and neon (Ne). These elements have their electrons filling up the available shells.
Electron Shell Configuration
- The **K shell** is the first shell and can hold a maximum of 2 electrons.
- The **L shell** is the second shell and can hold up to 8 electrons.
- The **M shell** is the third shell and can hold 18 electrons.
- The **N shell** is the fourth shell and can hold 32 electrons.
Outermost Shell in Period 2
For elements in Period 2, the outermost shell being filled is the **L shell**. This is because:
- The first two electrons fill the K shell.
- The next electrons (from lithium to neon) occupy the L shell.
Conclusion
Thus, for all elements in Period 2, the outermost shell is indeed the **L shell** (option B). This is crucial for understanding chemical properties, as the outermost electrons significantly influence reactivity and bonding behavior.
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