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Put the following in order of increasing ionization energy: Neon, Lithium, Carbon
Lithium, Carbon, Neon
Which of the following is true for alkaline earth metals as their atomic number increases? A. The atomic radius decreases. B. Ionization energy decreases. C. The number of valence electrons increases
B. Ionization energy decreases.
Factors affecting the ionisation energy:
Atomic radius; increase of nuclear charge; Shielding effect
When going down a group, the atomic size increases so the first IE __________.
decreases
When across a period, the atomic size decreases so the first IE ___________.
increases
Ionisation energy is
minimum energy required to remove 1 electron from 1 mol of gaseous atom
What element has the electronic configuration: [Xe] 6s2; 4f14; 5d10
Mercury (Hg)
What is electronic configuration for Al3+? (Z = 13)
[Ne] or 1s2; 2s2; 2p6
Use an electron configuration to determine the total number of electrons in the 3rd energy level (n=3) in a titanium atom (Z = 22).
10
How many unpaired electron of electronic configuration for Sulphur, S (Z=16)
2
Determine the element that has valence electron 3s2; 3p1
Al
State the valence electronic configuration for Mg (Z=12)
3s2
Write the electronic configuration for sodium Na (Z=11)
1s2 2s2 2p6 3s1
What atom matches this electron configuration? 1s2; 2s2; 2p6; 3s2
Magnesium
What electron configuration matches an oxygen atom?
1s2; 2s2; 2p4
What atom matches this electron configuration? 1s2; 2s2; 2p6; 3s2; 3p6; 4s2; 3d10
Zinc
The electronic configuration of an atom is 1s2; 2s2; 2p6. The number of electrons in the atom is
10
What is the electronic configuration of a potassium atom (using the order of its orbital)?
1s2; 2s2; 2p6; 3s2; 3p6; 4s1
What is the simple electronic configuration (using its shell) of Lithium?
2,1
Which two particles are contained in the nucleus of an atom?
Protons and neutrons
the number of protons
negative
The atomic number tells you...
the number of protons and also electrons
How many electrons can the first energy level hold?
2
How many electrons does Si contain?
14
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