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Elements of the Periodic Table(certification)

Last updated 4 days ago

3 questions

Note from the author:

Warm up for elements of the periodic table

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Question 1

1.

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9-12.PS1.A-1

What does the 87 stand for?

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Question 2

2.

What is the total number of neutrons for an atom of calcium.

Question 3

3.

Examine the block from the periodic table for the element nitrogen, chemical symbol N. Using your knowledge of the periodic table, which of these statements is correct about nitrogen?

Nitrogen has the same number of valence electrons as fluorine.

Nitrogen’s elemental symbol is Ni.

Nitrogen has the same number of energy levels as oxygen.

Nitrogen has fewer energy levels than boron.