From which of these atoms in the ground state can a valence electron beremoved using the least amount of energy?(1) nitrogen (3) oxygen(2) carbon (4) chlorine
Answers
Carbon is the atoms in the ground state can a valence electron beremoved using the least amount of energy. Hence option 3 is correct.
What is valence electron?
Valence electron is defined as the amount of electrons an atom must earn or lose to reach the electrical configuration of the nearby noble gas or inert gas. The quantity of electrons in the outermost energy shells is known as the valence electron number. The location of an element in the periodic table corresponds to how many valence electrons are present in that element.
The least amount of energy might be used to remove the carbon valence electron. Carbon one can observe that carbon has four valence electrons in the ground state electron configuration, two of which are in the 2s subshell and two of which are in the 2p subshell.
Thus, carbon is the atoms in the ground state can a valence electron beremoved using the least amount of energy. Hence option 3 is correct.
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After using loops, swabs, toothpicks, spreaders or any other equipment to transfer cultures, immerse the contaminated equipment in ______.pure bleach a strong acid tap water All of the above
Answers
Answer & explanation:
For an atom to be electrically neutral, it must have the same amount of protons and electrons, but this does not always happen, so compounds called ions arise.
Ions are formed when an atom of an element has electron gain or loss due to reactions. They can be classified into cations and anions.
Anions are atoms that receive electrons, so they are negatively charged.
Examples: Cl⁻, O⁻², N⁻³
Cations are atoms that lose electrons and thus become positively charged.
Examples: Na⁺, Al⁺³, Pb⁺⁴
In addition, some compounds are formed in bonds between negative and positive ions. These are called ionic bonds.
Example: Formation of sodium chloride (table salt).
Na⁺ + Cl⁻ → NaCl
covalent, because valence electrons are transferred
ionic, because valence electrons are shared
ionic, because valence electrons are transferred
Answers
Barium is a metal and Oxygen is a nonmetal, therefore there is no possible way they could bond unless they were attracted to opposite charges. Specifically, only if Barium becomes a cation and Oxygen becomes an anion then could they bond.
Now cation and anion both have the word "ion" in them, so therefore it must be an ionic bond.
Now we need to know the definition of a bond. A bond is formed when two elements are joined together by sharing their valence electrons.
Therefore, your answer should be:
Ionic, because valence electrons are shared.
B._25 grams
C._50 grams
D._100 grams
Answers
Answer : The correct option is, (C) 50 grams
Solution :
Formula used :
where,
a = amount of reactant left after n-half lives = ?
= Initial amount of the reactant = 100 g
n = number of half lives = 1
Putting values in above equation, we get:
Therefore, the amount of uranium-238 remain will be, 50 g
This is because a half life is the time it takes for a sample of an unstable isotope to spontaneously so that half of the original sample remains
Answers
Hello, It's me Moriah Elizabeth!
Answer:
When the number of electrons does not equal the number of protons, the atom is ionized.
Answers
Silver gets oxidized when electroplating silver (Ag) on iron (Fe).
What is electroplating?
Electroplating is basically the process of plating a metal onto the other by hydrolysis mostly to prevent corrosion of metal or for decorative purposes.
Silver gets oxidized when electroplating silver (Ag) on iron (Fe).
In the process of putting a sliver coating on iron, the iron is the cathode on which the silver ions get reduced.
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Answers
Answer:
Second
Explanation:
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