What is the primary characteristic by which the modern periodic table is arranged? question 2 options: date of discovery chemical and physical properties increasing atomic mass increasing atomic number

The correct answer is: 'increasing atomic number'.

Explanation:

In the modern periodic table the elements are arranged in increasing order of their atomic numbers.An atomic number of an element represents the number of protons present in the nucleus of an atom of that element.

In modern periodic table elements are placed in 18 groups that is vertical columns and in 7 periods that is horizontal rows.

The element ins same group has similar chemical properties. Where as elements in same period has same number of energy levels or shells.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.