A is the correct answer
groups are the vertical columns on the table. if you look at it, you can see that the atomic number and atomic mass increases as you go down.
Atoms are related to balancing equations because the amount of atoms on the left of the equation (reactants) needs to be the same amount on the right (products).
For example, 2H₂ + O₂ → 2H₂O
If you count the amount of hydrogen atoms on both sides each, there would be 4 (make sure to multiply the coefficient by the subscripts).
If you count the amount of oxygen atoms on both sides each, there will be 2 of them (2 in a molecule of oxygen)
I hope this helps and please mark me as brainliest!
Answer: they don't have values there because they aren't on the pauling scale of electronegativity, as they don't form any compounds with other elements. However, argon and neon can technically form compounds with other elements; it is just extremely unlikely.
Explanation:
Answer:
A combustion reaction
Explanation:
C
organic compound(contains carbon) reacts with oxygen to give out carbon dioxide and water is a complete combustion.
Answer: students are the dependent variable and the cartoon are the independent variable
Explanation: because the cartoon are being the same ever and the opinion of the students is what changes
