It is simply called "The Solar System"
They are called lobby groups, because they hang around in the lobbies of the government buildings.
I DONT KNOW
Gas giants (for the outer planets), versus rocky planets.
Inner rocky planets and outer gas giant planets. (There are also Ice giants and dwarf planets)
There aren't really two groups but All the planets before the asteroid belt (mercury Venus Mars and earth) are rocky planets and all the planets after the asteroid belt (Jupiter Saturn Uranus and Neptune) are gas giants.
The first 4 planets, Mercury, Venus, Earth, and Mars, are called rock planets, and the last 4, Jupiter, Saturn, Uranus, and Neptune, are the gas planets. The main differences between these two groups are that the rock planets are made of rock, the gas planets are made of gas, the rock planets are typically smaller than the gas planets, and the gas planets have rings.
The spatial arrangement of electron groups around the central atom is called molecular geometry. It describes the three-dimensional arrangement of atoms in a molecule.
There are the inner, terrestrial planets, also know as the rocky planets. Earth is one of these. Then there are the outer planets, also know as the gas planets or gas giants.
They traveled around in caravans.
The vertical rows on the periodic table are called groups.The vertical rows are called periods and the horizontal columns are called groups.
The Solar System has two major groups of planets - the four inner planets which include Earth, and the four outer planets. Each of these groups shares certain characteristics with one another. Mainly, the outer planets are gas giant - i.e., they are much larger than Earth, and they are made up mainly of gas.
The Solar System is the name of our particular planetary system around our star; Sol. Many stars have been observed to have similar planetary systems and it can be assumed this is a common event in the Universe. Often neighbouring stars will form small groups called clusters, but the Universe is populated by huge groups of stars called galaxies which contain anything from a few million to trillions of stars.