2 years ago

Diffrence btwn a period and a group

1 answer:

8 0

Rows of elements are called periods. The period number of an element signifies the highest unexcited energy level for an electron in that element.

Columns of elements help define element groups. Elements within a group share several common properties. Groups are elements have the same outer electron arrangement.

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Check all that apply. Some of the characteristics that make a good index fossil are:

neonofarm [45]

I think it’s D, I could be wrong though

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2 years ago

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What is the main difference in covalent bonds in diatomic chlorine and diatomic oxygen? diatomic means two atoms of the same typ

Aneli [31]

The correct response is C. Chlorine forms 1 covalent bond while Oxygen forms 2 covalent bonds.

3 0

2 years ago

Calculate the percentage of copper in copper oxide

WITCHER [35]

Well, look up the atomic weights of copper and oxygen; add them appropriately; divide the total for the copper by the total for the molecule; then multiply by 100 to get it as a percentage.

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2 years ago

A male construction worker regularly consumes 18 000 kJ of energy per day. Suggest the effects this could have on his health.

Romashka [77]

Answer:

It could lead to Fatigue

Low energy.

Headaches.

Aches, pains, and tense muscles.

Chest pain and rapid heartbeat.

Explanation:

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2 years ago

Atoms of iron (fe) and sulfur (s) form iron sulfide (fes) when the iron atom donates electrons to the sulfur atom. the type of b

marysya [2.9K]

Answer:

The type of bond formed in FeS would be Polar Covalent Bond.

Explanation:

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

Less than 0.4 then it is Non Polar Covalent Bond

Between 0.4 and 1.7 then it is Polar Covalent Bond

Greater than 1.7 then it is Ionic Bond

For Fe and S,

E.N of Sulfur = 2.58

E.N of Iron = 1.83

________

E.N Difference 0.75 (Polar Covalent Bond)

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3 years ago