Atomic Numbers and Electron Configurations

Question 1

Which of the following did Antoine Lavoisier correctly characterize as an element?

Revolt · Accepted Answer

mercury

Question 2

Which of the following did Antoine Lavoisier incorrectly characterize as matter?

Revolt · Accepted Answer

light

Question 3

Why did Mendeleev leave blank spaces in his version of the periodic table?

Revolt · Accepted Answer

Mendeleev’s periodic table arranged elements in order of increasing atomic mass; it was noticed that chemical properties repeated. Mendeleev predicted an element had not been discovered to fit the space.

Question 4

Organized elements into four groups based on properties:

Revolt · Accepted Answer

Lavoisier

Question 5

Developed the law of octaves:

Revolt · Accepted Answer

Newlands

Question 6

Arranged elements by atomic number:

Revolt · Accepted Answer

Moseley

Question 7

Identified triads of elements with similar properties:

Revolt · Accepted Answer

Dobereiner

Question 8

Organized elements according to increasing atomic mass:

Revolt · Accepted Answer

Mendeleev

Question 9

From the list below, choose which groups are part of the periodic table.

Revolt · Accepted Answer

metals; nonmetals; semimetals

Question 10

Use the periodic table to identify the chemical symbol or name for each element below.zirconium:

Revolt · Accepted Answer

Zr

Atomic Numbers and Electron Configurations Answers

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