This is because as the elements go down the group, the number of electron shells increases, and by using the density formula, mass/volume, you 'll realise that by increasing the number of electron shells, you are increasing the number of electrons, protons and neutrons as well, which obviously have masses, and thus it will increase the density as it will definitely surpass the increase in volume. (:
Density increases down a group due to the increase in Atomic Mass and atomic size of the elements. As you move down a group, more electrons and protons are added to the atoms, resulting in a greater mass and larger volume occupied by the atoms. This leads to an increase in density as more mass is packed into a larger volume.
I don't know the Periodic Table but I'd guess..due to increasing numbers of Hydrogen atoms ..OR..due to increasing complexity i.o.w. 2 unique atoms increasing to..?..7 unique atoms required to form each more complex Element? I'd be interested to learn the correct answer!! Regan
Its goes up because the atoms are bigger, Neutrons, Protons and electrons
Due to increase in number of shells (orbits of electrons arround nucleus) by 1 with each of your step.
The periodic table was designed with the lightest elements at the top and the heaviest at the bottom. It's just the way he did it.
The density of the element chlorine is approximately 0.003214 grams per cubic centimeter at room temperature and pressure.
The size of the atoms increases as you move down the periodic table in group 7. This is because as you move down a group, additional energy levels are added, resulting in larger atomic size.
Reactivity increases as you move down Group 1 in the periodic table. This is because the outermost electron is farther from the nucleus, leading to a weaker attraction and easier loss of the electron to form a positive ion.
As you move down a group or family on the periodic table: The number of energy levels increases (true). The atomic radius increases (true). The number of valence electrons remains the same (not true - the number of valence electrons increases as you move down a group).
Atomic size increases going down a group in the periodic table. This is because additional energy levels are being filled with electrons, leading to an increase in distance between the nucleus and the outermost electron shell.
The alkali metal density increases going down the group because the atoms have more electron shells as you go down the group, resulting in a larger atomic size. The increased number of electron shells leads to weaker attractive forces between the nucleus and the outermost electron, causing the atoms to be less compact and have lower densities.
The density of the element chlorine is approximately 0.003214 grams per cubic centimeter at room temperature and pressure.
As you go down the periodic table, the density generally increases. This is because the atomic mass and atomic size of elements increase as you move down a group, resulting in a greater mass packed into a larger volume. Exceptions can occur due to fluctuations in atomic structure or intermolecular forces.
Down the group the density generally increases. Thus radon will be the heaviest element.
Atomic radius increases down a group. Metallic character also increases down the group.
The density increase down.
As altitude increases, the density of gases decreases because the air pressure decreases with elevation. This means there are fewer gas molecules in a given volume of space at higher altitudes, leading to lower density.
Basic character depends upon electron loosing tendency of an element which increases down the group,SO basic character of alkali metals increases down the group
As temperature goes up density goes down. As volume goes up density goes down. As mass goes up (or increases) density also increases, or in other words, it freezes.
It increases
From top to bottom in the group the electro positivity increases so that the metallic character increases .
The ionic character increases for group 2 compounds as we go down the group. The metallic character also increases.