Atomic number or the number of protons in the element.
3.4 molecules is in 127 grams of iodine
Answer:
oxygen i think so......
Explanation:
i did the same question on my test
The position of hydrogen is controversial in periodic table because hydrogen is the only element with out neutron. it belongs to 1 st group but it is not placed there .
Answer:
2) It is neither a synthesis reaction nor a decomposition reaction because two reactants form two products.
Explanation:
This is not a synthesis reaction, which takes place when two or more reactants combine to form one product. This is a single replacement reaction, where the cation of an ionic compound "trades places" with another element that becomes the cation in a new ionic compound.