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WorksheetsReview Quiziz
Total questions: 16
Worksheet time: 1hrs 20mins
Magnesium has 3 naturally occurring isotopes: Mg-24 (78.99% with a mass of 23.99 amu), Mg-25 (10.00% with a mass of 24.99 amu) , and Mg-26 (11.01% with a mass of 25.99 amu). What is the average atomic mass of magnesium?
An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
Cl or Al?
The atomic radius across period
decrease from left to right
Increase from left to right
decrease from right to left
stay the same
As you move down a Group on the periodic table, what happens to the size of the atoms?
they stay the same
they get larger
they get smaller
What electron configuration matches an oxygen atom?
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
Zinc
Copper
Nickel
Germanium
