3.A neutral atom of a certain element has 25 electrons, 【題組】(a) What is the electron configuration o
【題組】(b) Which atom should have a higher second ionization energy: lithium or beryllium? Give your re
5.An organic compound has molecular formula of CH2O. 【題組】(a) Draw the most likely Lewis structure fo
【題組】(b) Indicate the hybridization orbitals and formal charge for carbon and oxygen atom in this mol