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Nastasia [14]
3 years ago
12

If the element A have three protons in the nucleus. find the atomic number of the element A​

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
3 0

Answer:

ATOMIC number of element A is 3

Explanation:

Atomic number is the same as number of protons of an element.

according to the periodic table, Lithium is the element with 3 protons in its neutral state and it's atomic number is 3.

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Carbon monoxide is 1. an atom, an element and a mixture. 2. a molecule, element and a pure substance. 3. an atom, a compound and
SSSSS [86.1K]

Answer:

The correct answer is option (6).

Explanation:

A molecule is group of atoms of same or different kinds of element.

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Compound is defined as a chemical specie which is made by the combination of different atoms.

As we can see from the chemical formula of carbon monoxide is made up of two atom of different elements that is carbon and oxygen.

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass. They have definite set of properties.

C+\frac{1}{2}O_2\rightarrow CO

1 mole of carbon combined with 0.5 moles of oxygen gas to give carbon monoxide gas.

4 0
3 years ago
In the determination of the specific heat of a metal, why is it desirable to use the minimum volume of water that will allow imm
Softa [21]

Answer:

Because it will allow a bigger temperature change.

Explanation:

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Qm + Qw = 0

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mm*cm*ΔTm = - mw*cw*ΔTw

So, as higher is the value of mw, as low is the value of ΔTw, and if ΔTw is very low, and so the calculations may not be precise.

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Answer:

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Explanation:

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Romashka [77]
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Electronegativity-a measure of the tendency of an atom to attract a bonding pair of electrons. The Pauling scale is the most commonly used. Fluorine (the most electronegative element) is assigned a value of 4.0, and values range down to caesium and francium which are the least electronegative at 0.7.
Lonization energy- qualitatively defined as the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.
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3 years ago
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