Chemistry, 12.08.2019 19:30 kim643

Use the periodic table to give the name and symbol for each of the following elements:
(a) the noble gas in the same period as germanium
(b) the alkaline earth metal in the same period as selenium
(c) the halogen in the same period as lithium
(d) the chalcogen in the same period as cadmium

Answers: 3

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Answer from: lbabineaux9887

For a: The noble gas in the same period as germanium is Krypton.

For b: The alkaline earth metal in the same period as selenium is Calcium.

For c: The halogen in the same period as lithium is Fluorine.

For d: The chalcogen in the same period as cadmium is Tellurium.

Explanation:

Periods are the horizontal lines in a periodic table.

For a:

Noble gases are the elements which are present in group 18 of the periodic table.

Germanium is present in Period 4 of the periodic table.

So, the noble gas in the same period as germanium is Krypton.

For b:

Alkaline earth metals are the elements which are present in group 2 of the periodic table.

Selenium is present in Period 4 of the periodic table.

So, the alkaline earth metal in the same period as selenium is Calcium.

For c:

Halogen are the elements which are present in group 17 of the periodic table.

Lithium is present in Period 2 of the periodic table.

So, the halogen in the same period as lithium is Fluorine.

For d:

Chalcogen are the elements which are present in group 16 of the periodic table.

Cadmium is present in Period 4 of the periodic table.

So, the chalcogen in the same period as cadmium is Tellurium.

Answer from: Yumimiku5989

According to the periodic table we can find this: a) Krypton (Kr); b) Calcium (Ca); c) Fluorine (F); d) Tellurium (Te)

Explanation: All derives from the name that the periodic table groups have. For the VIIIA Group, they named the Noble Gases. For the IIA Group, we can call them, the alkaline earth metals. For the VIIA Group, it calls Halogens. Finally, for the VIA Group, we call it the Chalcogens.

After knowing that, we just go to the periodic table and look for those elements in the same row (period) as the Germanium, Selenium, Lithium and Cadmium

Answer from: Quest

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

Answer from: Quest

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

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Use the periodic table to give the name and symbol for each of the following elements:
(a) th...