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Makovka662 [10]
3 years ago
15

Which is a FALSE statement about elements?

Chemistry
2 answers:
svetlana [45]3 years ago
6 0
C. Not each element has a known neutron number
OlgaM077 [116]3 years ago
3 0

Answer:

Option c, Each element has its own neutron number

Explanation:

Atomic number of any element is unique. All the atoms of an element have the same atomic number. Atomic number defines the identity of the element.

Atomic number is equal to number of proton. So, number of proton is also unique or each element has its own number of proton.

Chemical symbols are used to represent element in easiest way. Therefore, chemical symbol has to be specific for each element.

Atoms of an element can have different number of neutrons. Atoms of an element having same no. of proton but different no. of neutron are called isotopes.

So, among the given option, option c is false.

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All Elements are obtained in the periodic table & water is Not an element it is a compound.
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True or False: The atomic number is the number of neutrons in an element?
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true

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Why can filtration not be used to seperate a mixture of 2 liquids ​
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3 years ago
The following reaction is exothermic. C6H12O6(s)+6O2(g)⇌6CO2(g)+6H2O(g)C6H12O6(s)+6O2(g)⇌6CO2(g)+6H2O(g) Predict the effect (shi
Zigmanuir [339]

Answer:

According to Le Chatelier's principle, increasing the reaction temperature of an exothermic reaction causes a shift to the left and decreasing the reaction temperature causes a shift to the right.

Explanation:

C6H12O6(s) + 6O2(g) ⇌6CO2(g) + 6H2O(g)

We are told that the forward reaction is exothermic, meaning heat is removed from the reacting substance to the surroundings.

According to Le Chatelier's principle,

1. for an exothermic reaction, on increasing the temperature, there is a shift in equilibrium to the left and formation of the product is favoured.

2. if the temperature of the system is decreased, the equilibrium shifts to right and the formation of the reactants is favoured.

3. if the reaction temperature is kept constant, the system is at equilibrium and there is no shift to the right nor to the left.

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Identify the substance that conducts electricity. question 19 options: 1) nacl dissolved in water 2) solid nacl 3) solid sugar 4
Delicious77 [7]

The substance that conducts electricity is NaCl dissolved in water.

So, option A is correct one.

When the sodium chloride dissolve in water , the sodium atoms and chlorine atoms separates under the presence of water molecules and exist as sodium cation and chloride anion . Now , they are free to move around in the water as positively and negatively charged ions . This separation of charge allows the solution to conduct electricity.

The solid NaCl and solid sugar does not conduct electricity because it is not dissolve in water . Similarly, sugar dissolved in water does not conduct electricity .

to learn more about conduct electricity.

brainly.com/question/1458220

#SPJ4

4 0
1 year ago
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