Anion Y − có cấu hình electron: 1s22s22p63s23p6. Trong bảng tuần hoàn Y thuộc ( giải thích) A. chu kì 3, nhóm VIIA. B. chu kì 3, nhóm VIA.

C. chu kì 3, nhóm VIIIA. D. chu kì 4, nhóm IA.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.