The number of valence electrons in each atom of an element affects the elements
Answers
Explanation:
The number of valence electrons or outermost electrons present in an atom determines the chemical properties of an atom.
Therefore, atoms belonging to same group have same number of valence electrons. Thus, atoms of a group have similar chemical properties.
Hence, we can conclude that the number of valence electrons in each atom of an element affects the elements chemical properties.
The number of electrons in an atom's outermost valence shell governs its chemical properties. Elements react to form a closed shell, corresponding to the electron configuration s2p6 . This tendency is called the octet rule, because the atoms have eight valence electrons.
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Review the types of elements that create ionic bonds aswell as the types of elements that create covalent bonds.• N2 • CCl4 • SiO2• AlCl3 • CaCl2 • LiBr
if 20.0g of N2 gas has a volume of 0.40L and a pressure of 6.0atm, what is the temperature in degrees celsius?
What are ways you can collect and analyze data?
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Physically you can break matter into 'Particles' . Chemically you can get down to 'Molecules' . using Nuclear Radiation you can get down to the 'Atomic' structure but as Philhoon said Hydrogn would be the simplest 'element you can divide matter into. your welcome
Final answer:
Matter when broken down into its simplest parts forms elements. These are pure substances that everything in the universe is composed of. The smallest unit of an element is an atom, and when two or more atoms combine, a molecule is formed.
Explanation:
When matter is broken down into its simplest parts, it forms elements. Elements are the pure substances that everything in the universe is composed of and they cannot be broken down further using ordinary chemical reactions. Examples of elements include hydrogen, oxygen, carbon, nitrogen, calcium, and iron.
The smallest unit of an element is an atom, which is made up of subatomic particles like protons, electrons, and neutrons. When two or more atoms combine, a molecule is formed. Molecules are the smallest particles of matter while still retaining their chemical properties.
Elements in nature are unique with specific chemical and physical properties. Currently, 118 elements are known, but only 98 occur naturally. The remaining are synthesized in laboratories due to their instability.
Learn more about Elements here:
#SPJ12
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(AHC H20(I) = -285.8 kJ/mol)
A -120.9 kJ
B-241.8 kJ
C-571.6 kJ
D-285.8 kJ
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Answer:
The heat of reaction when hydrogen and oxygen combine to form water is :
C. 571.6 kJ
Explanation:
Enthalpy Change = The enthalpy change for the formation of 1 mole of the substance from their standard state is called the enthalpy of formation.
This is intensive quantity as it is fixed for 1 mole .
Intensive properties = Those properties which are independent on the amount of the substance are intensive properties.
The value of these quantities does not get halve if you divide the substance into two equal parts. example , density, refractive index.
However , the enthalpy of reaction is extensive. Because on increasing the amount the value of the enthalpy also get doubles
Hence for this reaction :
Its value is -285.8 kJ for 1 mole
And here two moles are present . so the value of molar enthalpy is:
-285.8 x 2 = -571.6 kJ
Answers
Answers
Devising a way to achieve the goals is the most important when setting goals.
Devising a way to achieve the goals
Explanation:
The fundamental objective for progress is Breaking down any long haul objectives into littler increasingly feasible objectives that help to advance accomplishment and achievement. While defining objectives, it makes its needs unmistakable for everybody associated with the association.
The reason for objective setting is to people what they have to concentrate on the most during the up and coming quarter, which at that point encourages them to have the option to organize their assignments.
Since it accomplishes an effective, engaged and definitive way by taking the correct activities in a lesser time period throughout everyday life.