What makes the atomic radius change along a period in the periodic table?A.More electrons pair in orbitals, making the atomic radius smaller.B.More electrons in the valence shell make the radius bigger.C.More protons in the nucleus pull the electrons in, making the atomic radius smaller.D.The increased atomic mass makes the atomic radius bigger.

Which sentence best explains the observed trend in atomic radius as you move down the periodic table?A.The more neutrons a nucleus has, the larger the atomic radius.B.The more core electrons an atom has, the smaller the atomic radius.C.The more energy levels that are occupied by electrons, the larger the atomic radius.D.The more paired electrons there are, the smaller the atomic radius.

What trend in atomic radius occurs as you move down a family on a periodic table?Explain what causes this trend.Group of answer choicesThe atomic radius decreases due to additional energy levels being added to the atom and more electron shielding along with more repulsion and increasing the size of the atomThe atomic radius increases due to additional energy levels being added to the atom and more electron shielding along with more repulsion thus increasing the size of the atomThe atomic radius increases due to less electron shielding down a family and along with more repulsion and increasing the size of the atomThe atomic radius decreases due to additional protons being added along with more electrons in the inner energy levels

Which of the following increases across a period (from left to right) in the periodic table?Atomic number and atomic radius First ionisation energy and atomic radius First ionisation energy and electronegativityElectronegativity and ionic radius

Define atomic radius. Explain the variation of atomic radius along a period and down the group.

Which statement best explains how periods on the periodic table are organized? A. increasing atomic number from left to right B. increasing number of neutrons from left to right C. decreasing number of electrons from left to right D. decreasing atomic mass number from left to right