Chem test 2
which of the following is an alkaline earth metal?
AL, RB, ZN None of the above
What is the name of the family of elements in Group 1?
Alkali metals
What is the name of the family of elements in group 2?
Alkaline earth metals
Which of the following is a halogen
Ar (br) H Hg
Which of the following is a halogen?
Ar, H, N None of the above
Atomic mass and isotopic mass
Atomic mass is the weighted average of the individual isotopic masses that occur naturally foran element
Daltons proposal
Atoms of the same element are identical Atoms are indestructible
Rank the following kinds of electromagnetic radiation in order of decreasing wavelength.
Radio waves Microwaves Infrared light red light violet light ultraviolet light xrays gammas
Solubility rules
Soluble in water Li, Na, K, NH4 C2H3O2- acetate NO3- nitrate Cl-, Br-, I- SO42- Not soluble CO32-, CRO42-, PO43-, S2-, OH-
Distinguish between atomic number and mass number
The atomic number refers to the number of protons in the nucleus; whereas the mass number refers to protons and neutrons.
What is the core notation for the electron configuration of an potassium atom?
[Ar] 4s1
What is the core notation for the electron configuration of an iodine atom?
[Kr] 5s2 4d10 5p5
what is the electron configuration of an aluminum atom?
[Ne] 3s2 3p1
what is the term for the value that indicates the total number of protons and neutrons in a atom of a given element?
mass number
d sublevel
10 e-
f sublevel
14e-
which of the following is an alkaline earth metal?
MG, CA, BA All of the above
Which element has the following electron configuration [Ar] 4s2 3d5
Mn
Atomic Mass formula
(abundance X amu) + (abundance X amu) = amu
according to the thompson model, what is the relative charge on a proton?
+1
according to the thompson model, what is the relative charge on an electron?
-1
S sublevel
2 e-
What is the maximum number of electrons that can be contained in the first, second, third, and fourth energy levels, respectively?
2,8,18,32
Which energy sub level is being filled by the elements Y to Cd
4d
Which energy sub level is being filled by elements Ce to Lu
4f
which energy sub level is being filled by elements Th to Lr
5f
p sublevel
6e-
which of the following is an alkaline earth metal?
Calcium
which of the following is a halogen?
Cl, F, I All of the above
which of the following is an alkali metal
Cs
Which of the following is a a noble gas?
He, Ar, Xe All of the above
what is the term for the region of very high density in the center of the atom?
atomic nucleus
what is the term for the value that indicates the number of protons for an atom of a given element?
atomic number
What is the term for the shorthand description of the arrangement of electrons by sub levels according to increasing energy?
electron configuration
what terms refer to a vertical column in the periodic table of elements?
group or family
What is the name of the family of elements in group 17?
halogens
