Black box
In the periodic table of elements below, one box is blackened. What is the $(val33[$val13]) of the element in this box?
copy 0,0,-1,-1,-1,-1,$val14 frect $val27,$val28,$val27+$val25,$val28+$val26,black
Black box II
In the periodic table of elements below, one box is blackened. What is the $(val33[$val13]) of the element in this box?
copy 0,0,-1,-1,-1,-1,$val14 frect $val27,$val28,$val27+$val25,$val28+$val26,black
Click on table
In the emptied periodic table of elements below, click in the box for the element whose $(val35[$val21]) is $val33.
Correspondance 3
Establish the correct correspondance between the $(val21[$val19]) and the $(val21[$val20]) of the following atoms.
Correspondance 4
Establish the correct correspondance between the $(val21[$val19]) and the $(val21[$val20]) of the following atoms.
Correspondance 5
Establish the correct correspondance between the $(val21[$val19]) and the $(val21[$val20]) of the following atoms.
Correspondance 6
Establish the correct correspondance between the $(val21[$val19]) and the $(val21[$val20]) of the following atoms.
Correspondance 7
Establish the correct correspondance between the $(val21[$val19]) and the $(val21[$val20]) of the following atoms.
Fill 10
Put the given symbols into the following table.
Fill 10 + 3
Put the given symbols into the following table.
Fill 10 + 8
Put the given symbols into the following table.
Fill 14
Put the given symbols into the following table.
Fill 20
Put the given symbols into the following table.
Fill 3
Put the given symbols into the following table.
Fill 3 + 3
Put the given symbols into the following table.
Fill 4
Put the given symbols into the following table.
Fill 5
Put the given symbols into the following table.
Fill 5 + 4
Put the given symbols into the following table.
Fill 6
Put the given symbols into the following table.
Fill 6 + 2
Put the given symbols into the following table.
Fill 8
Put the given symbols into the following table.
Metals and non-metals 10
Classify the elements below into metals and non-metals. Metals:
Non-metals:
Metals and non-metals 4
Classify the elements below into metals and non-metals. Metals:
Non-metals:
Metals and non-metals 6
Classify the elements below into metals and non-metals. Metals:
Non-metals:
Metals and non-metals 8
Classify the elements below into metals and non-metals. Metals:
Non-metals:
Next element
What is the $(val25[$val24]) of the element $val16 whose $(val25[$val23]) is $val29?
One element
What is the $(val23[$val22]) of the element $val16 whose $(val23[$val21]) is $val27?
Order 3
Arrange the following atoms in the increasing order, by dragging them in to the empty boxes.
Order 4
Arrange the following atoms in the increasing order, by dragging them in to the empty boxes.
Order 5
Arrange the following atoms in the increasing order, by dragging them in to the empty boxes.
Order 6
Arrange the following atoms in the increasing order, by dragging them in to the empty boxes.
Previous element
What is the $(val25[$val24]) of the element $val16 whose $(val25[$val23]) is $val29?