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2 years ago

What is the most reactive metal

Chemistry

1 answer:

ohaa [14]2 years ago

6 0

Some people think its francium and some people believe it is either sodium or potassium.

Some people believe that the most reactive element is francium because the larger the atom, the easier it is to get rid of the valence electrons and the easier it is to react with other atoms. so now if you look at the periodic table, francium has the largest radius and so that's why some people think its francium. but in my opinion, Francium AND Cesium.

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Does a large ball of aluminum foil have the same properties as a small ball?

dsp73

Answer:

yes

Explanation:

same properties different size

can i have brainliest pls

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2 years ago

Help !!!!!!! cell membrane plants information due soon

Leno4ka [110]

The cell membrane acts as a semi-permeable barrier in plants. In other words, is in charge or control of what comes in and out of the cell.

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2 years ago

Stoichiometric calculations are based on balanced chemical equations. the reason that chemical equations must always be balanced

Roman55 [17]

Answer: Chemical equations are balanced in order to: 1) satisfy the Law of Conservation of Mass, and 2) establish the mole relationships needed for stoichiometric calculations. The Law of Conservation of Mass: The Law of Conservation of Mass states that mass cannot be created or destroyed.

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3 years ago

Basic substances have a gritty texture.

crimeas [40]

<h3>1. Answer;</h3>

False

<h3>Explanation;</h3>

Bases have some of the following properties;

They have a bitter taste
They have a slimy, or soapy feel on fingers

Most bases react with acids and precipitate salts.
Strong bases may react violently with acids.

Bases turn red litmus paper blue

<h3>2. Answer;</h3>

An acid

<h3>Explanation;</h3>

When acids are dissolved in water, the concentration of the acid decreases and it becomes dilute.
It dissociates in water to give H+ ions or hydrogen ions.
All acidic solutions contain more hydrogen ions than hydroxide ions, therefore when added to water it increases the concentration of H+ ions in water, as water is a neutral substance whose concentration of H+ ions is equal to OH-.

5 0

2 years ago

Identify each statement as true or false. Explain in every case.a.Ionization energies are always negative quantities.b.Oxygen ha

worty [1.4K]

Answer:

(a) FALSE

(b) FALSE

(d) FALSE

Explanation:

Ionization energy refers to the energy needed for removal of a valence electron present in valence shell of a gaseous atom.

(a) The value of ionization energy of an atom is always positive. This is because energy has to be always supplied or provided to a gaseous atom for the removal of the valence electron.

Therefore, the statement (A) is false

(b) The ionization energy of an atom increases across a period i.e. from left to right. This is because the effective nuclear charge that is experienced by the valence electron increases from left to right in the periodic table, as the atomic number increases.

So, more energy is required to remove the valence electron of fluorine as compared to oxygen.

Therefore, the ionization energy of fluorine is greater than oxygen.

Therefore, the statement (B) is false

(c) First ionization energy is energy needed for removal of first electron present in valence shell of a neutral atom. Whereas, second ionization energy is the energy needed for removal of second electron present in valence shell of a monovalent cation

The second ionization energy of an atom is always greater than the first ionization energy. This is because removing an electron from a positively charged species, requires more energy.

Therefore, the statement (C) is true

(d) The third ionization energy refers to the energy needed to remove the third electron from a divalent cation.

Therefore, the statement (D) is false

7 0

2 years ago