WorksheetsChem Chap 5: Periodic Table
Total questions: 54
Worksheet time: 1hrs 1mins
Which scientist organized the periodic table by atomic number?
Mendeleev
Moseley
Dobereiner
Seaborg
Which scientist is known for the Law of Triads?
Mendeleev
Moseley
Dobereiner
Seaborg
This scientist discovered Group 18, which we call Inert/Noble Gases.
Moseley
Mendeleev
Ramsay
Thomson
What is the chemical symbol for the element with atomic number of 20?
Sc
La
K
Ca
What is the element name for atomic number 79?
mercury
copper
gold
platinum
How many valence electrons?
1s22s22p63s23p64s2
20
8
2
38
How many valence electrons?
1s22s22p63s23p64s23d104p4
2
4
6
16
H or F?
Which of these atoms has the largest atomic radius?
lithium
potassium
rubidium
cesium
As you move across the periodic table atoms tend to get smaller because, ______________.
the atoms have more mass.
the atoms have less mass
the atoms have more protons/electrons which attract
the atoms have less electrons.
Atoms that have a high ionization energy, _______________.
give up their electrons more easily.
hold on to their electrons more tightly.
have more electron shells.
