Which describes how elements are arranged in the periodic table? O by increasing atomic number
O by chemical symbol
O by increasing atomic mass
O by chemical name

O by increasing atomic number

Explanation:

Elements are arranged on the periodic table by increasing atomic number.

The atomic number of an element is the number of protons in such an atom. These protons are the positively charged particles in the atom.

Every atom of an element has a unique number of protons that distinguish it from other atoms.

Based on the number of protons which is the atomic number, elements are arranged on the periodic table.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.