Table of Contents
Why would the electrons spread out around the atom instead of bunching up?
Why would the electrons spread out around the atom instead of bunching up? Notice that the electrons are in pairs not a circle. Ions If you change the number of protons you change the element. To fulfill the octet rule and end up with a full outer shell of electrons.
What type of bonding around a central atom would result in a trigonal planar molecule?
In order to abide by the octet rule, this means that there will be two single bonds and one double bond on the central atom. Here’s the Lewis structure drawing of a carbonate ion as an example. Notice how the three oxygen atoms are all on the same plane, showing the trigonal planar geometry of the molecule.
What are the atoms connected to the central atom called?
Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom. Protons and neutrons are found in the nucleus. They group together in the center of the atom.
What are atoms surrounded by?
Atoms are made up of a positively charged nucleus surrounded by a cloud of negatively charged electrons.
What determines how far each electron travels from the nucleus?
In an atom, an electron is attracted to the nucleus by the “electromagnetic force”, similar to your rubber band. Like your baseball, the faster the electron goes, the farther away from the nucleus it is. The electrons in an atom are moving pretty fast, so they are far away from the nucleus.
What makes an atom model inaccurate?
First, the Bohr model violates the Heisenberg Uncertainty Principle, since it states that electrons have a known radius and orbit. The Bohr Model also provides an incorrect value for the ground state orbital angular momentum and doesn’t work as well for creating diagrams of larger atoms.
What shape would a molecule with four atoms surrounding a central atom have?
Tetrahedral
A molecule with four electron groups about the central atom orients the four groups in the direction of a tetrahedron, as shown in Figure 9.3 “Tetrahedral Geometry”. If there are four atoms attached to these electron groups, then the molecular shape is also tetrahedral. Methane (CH 4) is an example.
How many bonding sites are on the central atom in a trigonal planar geometry?
three
A compound with trigonal planar molecular geometry has a central atom bonded to three other atoms or groups. As it has no lone pairs of electron pairs, the three groups to which it is bonded are arranged like a triangle around the central atom, with the bond angles measuring 120 degrees.
What makes the center of an atom unstable?
When the atoms of an element have extra neutrons or protons it creates extra energy in the nucleus and causes the atom to become unbalanced or unstable. Whether radioactive elements can become stable and if so, how. The unstable nucleus of radioactive atoms emit radiation. This process is called radioactive decay.
What particles are moving around the center of the atom?
The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus. The electrons have a negative electrical charge.
How are atoms formed?
Atoms were created after the Big Bang 13.7 billion years ago. As the hot, dense new universe cooled, conditions became suitable for quarks and electrons to form. Quarks came together to form protons and neutrons, and these particles combined into nuclei.