Which element has the same number of valence electrons as bromine (Br)?
1.krypton
2.potassium
3.selenium**
4.chlorine
i think the answer is SE
Answer's (*9 Questions test*)
1. chlorine (Cl)
2. They have similar reactivity.
3. It is a physical change because there is no reaction.
4. They form new substances.
5. it shows that no atoms have been gained or lost during the reaction
6. Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.
7. six
8.H2O
9. (Some Ideas)
- Matter is neither created nor destroyed. Therefore, you have started with 12.7 g Cu and 3.2 g S on the left for a total of 15.9 g; therefore, you must obtain 15.9 g of product(s). If Cu2S is the only product there must be 15.9 g Cu2S.
- The way to calculate this is by simply weighing the reactants as the mass of the reactants and product(s) will be the same.
- The answer is The Conversation of Mass Law. Basically what it means is that matter can’t be created or destroyed, this can be proven by the fact that 12.7 + 3.2 = 15.9
and don't forget, keep gaming 😎
UnknownGmr is 100% correct trust me
bromine is one of the halogens ... like chlorine
Do not use people's responses that are letters! They mix up our answers!
Game on gamers, that’s all i gotta say. Shoutout to the homie “unknowngmr” for helping me with the first few questions. <3 (*´-`) stay safe guys
(P.S. trans rights)
Thanks So Much Unknown Gmr
You were 100% correct