Periodic Table
What is the name of Group 1?
Alkali Metals
The number of protons of Carbon is
6
Which is bigger the atomic radius of sodium or chlorine?
sodium
What has a higher ionization energy? K or Li
K
What is the variable for the principle energy level?
n
The periodic table is arranged by _________.
Atomic Number
What subatomic particles are in the nucleus?
protons and neutrons
What is smaller Ca or Ca2+ ?
Ca2+
What has the higher ionization energy Br or K?
Bromine
What is the configuration for Al3+?
1s2 2s2 2p6
The two elements that are liquid at standard temperature.
Bromine and Mercury
What is the average weighted mass of gold?
196.96 AMU
The trends of atomic radius does what in both directions on the periodic table?
increases going down a group
decreases going across a period
The most reactive element in group 1 which is not radioactive is ?
Cs
How many orbitals are in the d subshell?
5
The element in group 1 that does not share properties with the ohers.
Hydrogen
How many electrons does tin have?
50
What is electron shielding?
The valence electron is shielded by inner electrons from feeling the full positive force of the nucleus. The inner electron repel it so in effect cancel out some of the positive attraction.
Ionization energy is the energy required to remove an electron. What is the name of the trend discussed that describes an electron being added to a neutral atom?
electron affinity
How many electrons does each orbital hold?
2
Silicon is what type of element.
a metalloid
How many electrons does P3- have?
18 electrons
Explain why the atomic radius decreases across a period.
a) A nucleus with 1 proton has 1 electron outside of it.
b)Another nucleus has 2 protons and has 1 electron outside of it.
Compare the energy necessary to separate the electron from the atom.
B would require more due to the higher positive charge of the nucleus.
Write the noble gas configuration for bismuth.
[Xe] 6s2 4f14 5d10 6p3