Classification of the Elements

Which of the blocks on the periodic table contains the most elements?

• s block

• p block

• d block

• f block

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

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The elements which occupy the middle block (d) in the periodic table are called _____________ elements.

• transition

• alkali

• alkaline earth

• noble gas

Hydrogen is a ____________.

• Metal

• Non-metal

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NGSS.HS-PS1-1

Atoms of elements in group 1 have ____________.

• one valence electron.

• two valence electrons.

• seven valence electrons.

• eight valence electrons.

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NGSS.HS-PS1-2

How many valence electrons does an atom of sulfur (S) have?

• 2
• 3
• 6
• 16

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NGSS.HS-PS1-2

Protons and neutrons are found in the center of the atom called the:

• nucleus

• neutron

• shell

• cell

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The chemical properties of calcium (₂₀Ca) are similar to those of ________________.

• ₁₉K

• ₁₂Mg

• ₂₅Mn

• ₃Li

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NGSS.HS-PS1-2

Choose which of the following position is correct for Neon (Z = 10). (Please use electronic configuration to determine the position)

• Period : 2

  Group : 17

  p-block

• Period : 2

  Group : 18

  s-block

• Period : 2

  Group : 18

  p-block

• Period : 2

  Group : 8

  p-block

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Sulphur has the electronic configuration of 1s² 2s² 2p⁶ 3s² 3p⁴. Choose the correct position of sulphur in periodic table.

• Group 6

  Period 3

  p-block

• Group 16

  Period 3

  s-block

• Group 16

  Period 3

  p-block

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