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?