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PS 1-1 Lesson 1 FA2

Last updated over 4 years ago

2 questions

1 point

1

Question 1

1.

Which of the following is the chemical symbol in the picture?

A  2

B  He

C  Helium

D  4.0026

1 point

1

Question 2

2.

How did Mendeleev organize the periodic table?

The elements are organized alphabetically.

The elements are arranged by their state of matter.

The elements are arranged by common properties.

The elements are arranged in order of the number of letters in the chemical symbol.