A prediction is not based upon evidence or reliable tests. A prediction is a guess as to what will happen in the future. Forecasts for example are nothing more than prediction, as even with "meteorological evidence", nothing is ever truly sure when in regard to wheather.
So "A"
Answer:
C
Explanation:
because valence electrons are located at the last energy level
The % error in the student’s data is
Correct score - run score/ correct score * 100
In run 1 we have
0.2542 - 0.2541/0.2542 * 100 = 0.000393391031 = 0.03933%
In run 2 we have
0.2542 - 0.2668/0.2542 * 100 = -0.00495672699 = -0.495%
In run 3 we have
0.2542 - 0.2549/0.2542 * 100 = -0.00275373721 = -0.275%
And run 4 we have
0.2542 - 0.2554/0.2542 * 100 = 0.00495672699 = 0.495
The spread are 0.2542 - 0.2541 = 0.0001 and 0.2542 - 0.2668 = -0.0126
Also 0.2542 - 0.2549 = -0.0007 and 0.2542 - 0.2554 = -0.0012
80Kr=79.916380 amu; 80Se=79.916520 amu; neglect the mass of electrons involved
<h3>What is
electrons ?</h3>
The electron is a subatomic particle with an electric charge of one elementary charge less than positive. It is represented by the symbol. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles. The mass of an electron is roughly 1836 times less than that of a proton.
The electron has a half-integer intrinsic angular momentum (spin) that is described in terms of the reduced Planck constant,, among its quantum mechanical features. Since electrons are fermions, the Pauli exclusion principle states that no two electrons may be in the same quantum state. Since they can collide with other particles and can be diffracted like light, electrons, like all primary particles, display both wave and particle characteristics. The
To learn more about electrons from the given link:
brainly.com/question/860094
#SPJ4
Answer:
synthesis
it's the reaction of bringing two atoms into one
Na + Cl --> Nacl
or more generally
A + B --> AB