its to do with the groups not the atoms the group at the bottom of the table are rare earth metal (58-103) and these are just the way Mendeveel (the person who made the pt) set them out i am not sure why. Just physics and chemistry nothing else.
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I wouldn't agree with the above statement. I would say that the atomic radii of an atom increases going down a group because as we move down the Periodic Table each atom has more electron shells and so the valence electrons end up further away from the nucleus which in turn means the electrostatic force between the nucleus and the valence electrons decreases and the atom is "larger".
The higher up an element is, the closer the outer electron shell is to the nucleus and so the more attractive force the nucleus has on other electrons. This is also a governing factor on the likelihood of an element to react.
Because that's the way the periodic table works. Left to right, top to bottom, small to heavy.
More electrons take up more space, and the more atoms added the closer they go to the nucleus decreasing the atom.
Ba, because it is lower on the periodic table
Spent carbide is the used form of carbide, which is a binary compound of carbon with an element of lower or comparable electronegativity. It is considered damaging to the environment.
lower
The ozone molecule consists of 3 oxygen atoms, and all oxygen atoms have exactly the same attraction for electrons (technically called electronegativity) so naturally, they share electrons equally. The carbon dioxide molecule consists of one carbon atom and two oxygen atoms. Carbon does not attract electrons as strongly as oxygen does (it has a lower electronegativity) so therefore the electrons are not shared equally.
Atoms move fastest in gases, then liquids, then solids. Also, atoms move faster in higher temperatures than in lower temperatures.
There is no reason simply because they do not have higher electronically!
the atoms go boom boom boom 13 milion times and then they die
Atoms become electrically charge when they reacting to one another. The two groups of charged atoms are cations (positively charged) and anions (negatively charged), and all together these types of atoms are called ions. The ability to become electrically charge depends on their electronegativity values and ionization energies. Electronegativity refers to an atom's "pull" on electrons, meaning that the more electronegative an atom is the harder it will "pull" on electrons from other atoms. The more electronegative atoms (typically the anions) reside on the far right side of the periodic table. Ionization energy refers to the energy needed to pluck an electron from an atom. Atoms with the lower energy typically have lower electronegativity values, making them cations (which are to the left of the periodic table).
Organic molecules that contain atoms with a higher/lower electronegativity than C will contain polar covalent bonds. Obvious examples are molecules with O atoms e.g. alcohols, ketones, ethers.
The suffix -ite is associated with a lower number of atoms. The suffix -ic is associated with a higher number of atoms.
The elements with low electronegativity are the metals, specifically the alkali metals and alkali earth metals. The elements further to the left of the periodic table will have lower electronegativity than those farther to the right.
As you move down a column (group) in the periodic table, the electronegativity decreases, the ionization energy decreases, the electron affinity decreases, and the atomic radius increases.
Electro negativity is lowest in the bottom of the first group. Cs and Fr have least electro negativity.
A polar covalent bond because: When two atoms with different electronegativities form a covalent bond, the shared electrons are more likely to be closer to the atom of higher electronegativity rather than the atom of lower electronegativity.
Fluorine has the highest electronegativity among the three elements. Oxygen is the second most electronegative, while chlorine has a slightly lower electronegativity compared to both fluorine and oxygen.
The atoms with the largest atomic radii are found in the lower right side of the periodic table. Smallest atoms are found in the higher left part of the periodic table. He has the smallest atomic radii.
Rb has lower electronegativity (0.8) where as Na is 0.9