Which two elements have the most similar chemical properties? A)
Cl and Br
B)
Ca and Cu
C)
Be and Li
D)
Na and P

I need someone to help me quickly plzzz

Identify a strong intermolecular force of attraction between an alcohol

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.