Answer:
Weather, environment, ecosystem, species, rain forests
Explanation:
Atoms are held together with both electromagnetic force and strong force.
When a cell uses chemical energy to perform work it couples exergonic reaction with endergonic reaction.
Answer:
B) The shape of the molecule is determined by the valence electrons of the different atoms within a molecule repelling each other, so the atoms are as far apart as possible from any other valence shell.
Explanation:
VSEPR denotes Valence Electron Pair Repulsion.
It is one of the theories used to predict the model of a compound or molecule.
- An atom bonded by two or more other kinds of atoms as in many covalent molecules and ions have their geometry determined by the bonds around the central atom.
- The VESPR theory determines the total number of electron pairs surrounding the central atom of a specie.
- The electron pairs orients in such a way as to minimize the electrostatic repulsion between them.
Mass number=number of protons+number of neutrons
=atomic number+number of neutrons
