Chemistry, 30.06.2019 20:00 pnhandley01

Metals show a wide range of chemical behavior. give examples of that variation by describing some common properties of calcium, gold, iron, and sodium.

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Answer from: sillslola816oxb5h7

Explanation:

Atomic number of sodium is 11 and it is a group 1 element. Hence, it is most reactive in nature.

Some properties of sodium are as follows.

It is one of the most chemically reactive metals.When it is not stored properly, sodium reacts explosively with air or water.

Atomic number of calcium is 20 and it is a group 2 element. Some properties of calcium are as follows.

Calcium is less reactive than sodium, but it is more reactive than most metals.Both sodium and calcium are always found as compounds in nature, and they are never present as elements.

Atomic number of iron is 26 and it is a d-block element. Therefore, it is also known as transition element.

Some properties of iron are as follows.

Iron also reacts with oxygen, but it does so over a period of time.When not protected by a coating then iron will gradually turn to rust, a compound of iron and oxygen.

Atomic number of gold is 79 and it is also a transition element. A property of gold is that it does not react easily with other substances.

Answer from: Quest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

Answer from: Quest

Hno3(aq) → h+(aq) + no3−(aq). picture ii best represents the strong acid hno3. strong acids are strong electrolytes

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Metals show a wide range of chemical behavior. give examples of that variation by describing some co...

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