Periodic table Flashcards
What atomic particle is found in the nucleus but has a net charge of 0?
Neutron.
Do groups or periods have similar properties?
Periods, they go downwards.
What are the rows going across the periodic table called?
Groups.
What are the rows going down the periodic table called?
Periods.
How is the mass number calculated?
Protons + Neutrons.
What atomic particle can have varied quantities?
Neutrons.
How is the atomic number calculated?
Number of protons in the nucleus.
How many atoms do an orbital contain?
Either 0, 1 or 2 electrons.
How many orbitals in D’s and F’s subshell?
D= 5 F= 7
What does smart people don’t forget stand for and mean?
S= 1 P= 3 D= 5 F= 7
These numbers represent how many orbitals are in an atom.
What is the electron configuration formula?
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f 7s 7p 7d 7f
Every period represents another electron shell being added to an atom. From this info would a sulfur atom be bigger than an oxygen atom?
Yes a sulfur atoms would be bigger because it is in the period below oxygen which means it’s had another electron shell added.
Which of the following compounds would form a precipitate in water?
a) NaCl
b) NH4Cl
c) AgCl
d) KCl
c) AgCl: because any sliver compound attached to a halogen Gr7 will form a precipitate.
What was Hund’s rule?
every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
What was Pauli’s rule?
In an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing.
