A Level Chemistry MCQs – Certification Test 745
MCQ 745: The only element which have electronic configuration of 1s2 is:
Free Electronic Configurations Trivia App: Study Electronic Configurations Notes, A level Chemistry Trivia App, and College Chemistry Trivia App for chemistry online tutorials.
Free Electronic Configurations Learning App Download: A level Chemistry Trivia App (iOS & Android) for chemistry experimental techniques. Download Play Store & App Store Learning Apps with all functionalities to enhance chemistry virtual literacy.