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Montano1993 [528]
3 years ago
10

What is the valence e- (outermost e-) for the following elements:

Chemistry
1 answer:
shutvik [7]3 years ago
6 0

Answer:

A options hydrogen

Explanation:

valence outermost element is hydrogen.

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Here is a chemical equation:
sweet [91]

Answer:

The balance equation is 4CH3+7O2=4CO2+6H2O

Explanation:

The given reaction belongs to redox reaction because in this reaction CH3 is getting oxidized to form carbon dioxide(CO2) and oxygen is getting reduced to generate water(H2O).

    Both oxidation and reduction will accompany the product.

I have balanced the reaction by equaling the atoms of each element on both sides(reactant side and product side).

5 0
3 years ago
Many extrusive volcanic rocks contain holes which have formed from
mario62 [17]
Air bubbles, which make them porous 
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3 years ago
Identify which of the following statements are true. Check all that apply. Check all that apply. Ionization energies are always
AURORKA [14]

Answer:

The second ionization energy of an atom is always greater than its first ionization energy.

Explanation:

<em>Ionization energies are always negative quantities.</em> FALSE. Ionization energies are always positive because they represent the energy that has to be added to a neutral gaseous atom to remove 1 electron. By convention, energy absorbed goes with the positive sign.

X(g) + 1 I.E. ⇒ X(g)⁺ + 1 e⁻

<em>Oxygen has a larger first ionization energy than fluorine.</em> FALSE. First ionization energy  (1 I.E) is the energy required to remove 1 electron from a neutral gaseous atom. First ionization energy for Oxygen is 13.61 eV and for Fluorine is 17.42 eV, that is, more energy is required to remove an electron from F than from O.

<em>The second ionization energy of an atom is always greater than its first ionization energy.</em> TRUE. The energy required to remove 1 electron from a +1 cation (second ionization energy) is always greater than the first ionization energy because of the attraction between the cation and the electron.

X(g)⁺ + 2 I.E. ⇒ X(g)⁺² +  1 e⁻

<em>The third ionization energy is the energy needed to ionize three electrons from a neutral atom.</em> FALSE. The third ionization energy (3 I.E.) is the energy required to remove 1 electron from a +2 cation.

X(g)⁺² + 3 I.E. ⇒ X(g)⁺³ +  1 e⁻

4 0
3 years ago
Write out and balance the chemical equation:
malfutka [58]

Explanation:

NiCl2 + KOH = NiOH + KCl

since nickel is the primary element in nickel ii chloride, find the oxidation no of nickel in the compound and chlorine should have 2 as a subscription since the ii in the compound represents that nickel has an oxidation no of 2

4 0
3 years ago
Read 2 more answers
State the colour of a solution of copper sulphate
dybincka [34]
The colour of copper sulphate solution is blue
5 0
3 years ago
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