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3 years ago

The classification of elements in the periodic table is mainly based on

Chemistry

1 answer:

Allushta [10]3 years ago

8 0

Answer:

atomic number

Each period, numbered one through seven, contains elements of increasing atomic number. Unlike Mendeleev's original list, the modern periodic table is based on atomic number, or the number of protons in an element's atomic nucleus

Explanation:

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As you move from left to right in the third period of the periodic table…

Pepsi [2]

Answer:

Explanation:

2.8.1 Na

2.8.2 Mg

and so on and so forth

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2 years ago

A 250mL sample of air at STP contains approximately 52.5mL of O2. What is the percentage of oxygen in the air

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3 years ago

Would you expect a carbon atom to have the same mass as an oxygen atom

kramer

Its impossible coz carbon has isotopes C-12 and C-13 whereas oygen has isotopes 16O, 17O, and 18O, so impossible. Hope it helps

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3 years ago

Read 2 more answers

Student follow up

sleet_krkn [62]

Answer:

Magnesium and calcium belong to the second group i. e. alkaline earth metals. They are known as earth metals because they are extracted from the earth. They are very reactive elements. Their reactivity increases when we go from top to bottom because the outermost electrons goes farther from the nucleus i. e. atomic radius increases so less energy is needed for its removal.

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3 years ago

In one sentence, describe the general chemical structure of carbohydrates. In a second sentence, list the major biochemical func

Brums [2.3K]

Answer:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is $CH_2OH$ .

Biochemical functions of carbohydrates: Carbohydrates provide Stored Energy, Carbohydrates help to preserve Muscle and promote digestive health and Carbohydrates build macromolecules

Explanation:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is $CH_2OH$ .

Biochemical functions of carbohydrates:

1. Carbohydrates provide Stored Energy.

2. Carbohydrates help to preserve Muscle and promote digestive health.

3. Carbohydrates build macromolecules

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3 years ago

The classification of elements in the periodic table is mainly based on ​

The classification of elements in the periodic table is mainly based on