What are Isotopes?

First test date: December 21, 2025 Examination time（Beijing Time）：Chinese：13:00 - 14:30Mathematics：15:30 - 16:30Physics：17:30 - 18:30Chemistry：19:30 - 20:30 Asia-Pacific region: December, April, JuneEuropean, African, and American regior: January, March. CSCA ekzamenyñ wagtlaryna ünslije boluñ! Ýylda 5 sapar bolup oda ikä bölünýär, Emma Azia ýurtlar üçin ýylda 3 gezek tabşyryp bolýar🥲 Link: https://mp.weixin.qq.com/s/Oi10hIi_stevzL2mA9RrRQ (shu saytdan gorup bilersiniz) Ekzamen gecirilyan Sayt:

IQ (Intelligence Quotient) is a standardized score from tests measuring cognitive abilities like reasoning, problem-solving, and memory, comparing an individual's mental performance to their age group, with the average set at 100. It's a numerical representation of intellectual capability, derived from various subtests, that helps identify learning needs and guide educational or career paths, though it doesn't capture the full scope of human intelligence. Source : visualcapitalist #usa #maps #ed

Protons Neutrons Electrons Isotopes - Average Mass Number & Atomic Structure - Atoms vs Ions