Answer:
Explanation:
calculated by adding the standard atomic masses (in g/mol)
Scandium Z= 21 has an electronic configuration of 1s²2s²2p⁶3s²3p⁶3d¹4s².
This shows that Scandium has 21 electrons with three outermost or valency electrons. It is a d-block elements whose valence electrons are equal to their group number, which is equal to the number of electrons in the valence shell.
Answer:
attached below
Explanation:
The Four Claisen condensation are grouped into :
- Self Claisen condensation reaction
- Cross Claisen condensation reaction
Self Claisen condensation is when R = R'
Cross Claisen condensation is when R ≠ R'
attached below are the four Claisen condensation