Answer:
its atomic number will be 3 and it's mass number will be 7. it is lithium
Answer:
A
Explanation:
The number of protons and neutrons of an element is the same. the electrons are the only thing that can differ. The atomic number equal the protons and neutrons.
Yield is the measured amount of a product obtained from a reaction.
Hope that's helpful
Answer:
Acids react with most metals.
When an acid reacts with a metal, the products are a salt and hydrogen.
This is the general word equation for the reaction: metal + acid → salt + hydrogen
Explanation:
All the following are equal to Avogadro's number EXCEPT a. the number of atoms of bromine in 1 mol Br₂.
1 mol Br₂ contains Avogadro’s number of molecules of Br₂.
However, each molecule contains two atoms of Br, so there are
<em>2 × Avogadro’s number of Br atoms </em>in 1 mol Br₂.
