HELPP!!Pick one substance and compare two of the atoms connected to each other. 1.Are they close or far away from each other on the periodic table?

2.So they have similar atomic radii?

3.Do they have a large or small difference in ionization energy?what about for electron affinity?

Cell theory states that all the living organisms are made up of basic structural and functional units, cells. All cells divide and give rise to new cells. All the cells have similar chemical composition. The nuclei acid DNA present in the chromosomes helps in carrying hereditary information from generation to generation. So, in order to sustain life the cells must contain DNA either enclosed in the nucleus or freely floating in the cytoplasm.