Flashcards in Chapter 2 Deck (65):
What are differences between protons and neutrons
Protons - are a positive charge, determines identity of the element
Neutrons - Have a neutral charge, Number of neutrons can change mass of element and create an isotope of the element
What are similarities between protons and neutrons
they are both centered in the nucleus of an atom. They add up to equal the mass number.
What are the differences between protons and electrons?
Protons - are a positive charge and are located inside the nucleus
Electrons - are a negative charge and located outside of the nucleus
How do you write an isotope that has 1 protein and 2 neutrons
How do you write the symbol for an isotope that has 92 protons and 146 neutrons
the elements if arranged according to their atomic weights, show a distinct periodicity of their properties
Horizontal row of elements in the periodic table
or families, are columns of elements in the periodic table. They share many similarities , as in the human family.
Electronically charged particles that result from a gain or loss of one or more electrons by the parent atom.
Does N tend to form a positive or negative ion
Name the element Ca
Name the element Cu
Name the element Co
How many valence electrons are found in Mg
How many valence electrons are found in K
How many valence electrons are found in C
How many valence electrons are found in Br
How many valence electrons are found in Ar
What sublevels would be found in the principal energy level 1?
What sublevels would be found in the principal energy level 2?
What sublevels would be found in the principal energy level 3?
3s, 3p, 3d
What sublevels would be found in the principal energy level 4?
4s, 4p, 4d, 4f
What is the max number of electrons that can exist in the following principal energy levels?
How do you write the electron configuration for an atom or ion of:
Silicone - 1s2, 2s2, 2p6, 3s2, 3p2
Iodine - 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p5
Phosphorous - 1s2, 2s2, 2p6,3s2,3p6
Br - 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6
Is Se2-, KR isoelectric?
Is Mg2+, Ne isoelectric?
Is Mg2+, Na isoelectric?
Is Li+, Ne isoelectric?
Is S2-, F- isoelectric?
Rank Cl, Br, I, and F by atomic size
F, Cl, Br, I
Rank Cl, Br, I, and F by ionization energy
I, BR, CL, F
Rank Cl, Br, I, and F by atomic size by electron affinity
I, BR, CL, F
Number of protons in the atom
Sum of the number of protons and neutrons
energy required to remove an electron from an isolated atom
Energy released when a single electron is added to an isolated atom
Increases, it releases more energy, as you go up in a family or to the right of a period
are the outermost electrons in an atom, used in bonding process
specific region of a sublevel containing a maximum of 2 electrons
principal energy levels
regions where electrons may be found, and have integral values designated n=1, n=2, and so forth
describes the arrangement of electrons in an atom
Does a metal tend to gain an electron or lose
Does a non-metal tend to gain an electron or lose
when electron of atom are in the lowest possible energy levels
when electron is furthest from nucleus
smallest unit of matter is an atom
atoms consist of what?
absorption or emission of light by atoms
to understand light: UV, gamma, visible light, microwave
What involved in a chemical reaction?
Metals are what at room temp?
solid, except mercury
What else increases if Principal levels increase
Subshell # of orbitals
P - 3
D - 5
F - 7
Loses electrons (positive charge), metals, smaller
Gains electrons (negative charge), non-metal, bigger
Ionization does what down a group/family?
Ionization does what across a period?
atoms of same element having a different mass
which of Dalton's theories do not hold up?
2 & 3, in the list of 6
Cathode ray tube was used to discover?
what was 2nd particle to be discovered?
Majority of mass in an atom is located where?
in the nucleus
what does light help us to understand?
electron density is what?
Electrons move rapidly within the orbital
Equation for electron capacity
2 (n) ^2
n=principal energy lvl