Question

1. which of the following is a property of elements in the same group (column) on the periodic table? they have similar chemical properties they have similar atomic mass they are all non - metals they have the same number of protons clear all

Explanation:

Elements in the same group (column) of the periodic table have the same number of valence electrons, which leads to similar chemical properties. Atomic mass varies across a group. Groups can contain both metals and non - metals (e.g., Group 14 has carbon, a non - metal, and lead, a metal). The number of protons (atomic number) increases down a group, so it's not the same. So the correct property is having similar chemical properties.

Answer:

A. They have similar chemical properties