based on the electron configuration, how many valence electrons are in calcium, ca? 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²…
based on the electron configuration, how many valence electrons are in calcium, ca? 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 1 2 4 20
Answer
Explanation:
Step1: Identify valence shell
Valence electrons are in out - most shell. For Ca with electron - configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}$, the out - most shell is the 4th shell.
Step2: Count electrons in valence shell
In the 4s sub - shell (part of the 4th shell), there are 2 electrons.
Answer:
2