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Is the word these a preposition?

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December 25, 2023

No,the word "these" can't be used as a preposition.But it can't be used as a pronoun or an adjective (a determiner).

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【】What Is the Electron Configuration with Step by Step Guides to write Electron Configurations of Atoms and Ions of Elements ?

January 26, 2019

Hello everyone! today I am going to discuss electron configuration. I hope you will enjoy this blog post. The atomic number of an element indicates the number of protons in the nucleus of an atom of that element. Equal number of electrons are present outside the nucleus. According to quantum mechanics, these electrons are arranged in different orbitals according to definite rules. The arrangement of electrons in different orbitals of an atom is known as electron configuration. Now watch this video about Electron configuration. Here is the step by step guides to write electron configuration of neutral atoms and ions of different elements: Electron configuration is guided by three rules,namely: 1) Pauli's exclusion principle 2)Aufbau principle 3)Hund's rule. Here is the explanations: 1)Pauli's Exclusion Principle In 1925 W. Pauli's formulated a principale about the arrangement of electrons in an atom. This is known as pau...

【】What Is the Calcium Carbonate Formula?

February 04, 2019

CaCO₃ is the calcium carbonate formula. Explanation: Hello!everyone,today I am going to show you how to write calcium carbonate formula or formula of calcium carbonate. Step-1:We know that calcium is in group II in the periodic table.This means Ca²+.That is the oxidation number of calcium will be 2+. Step-2:Now we need to know the formula of carbonate.The formula for carbonate is CO₃ 2- Step-3:Now place the two ion side by side. Ca² + CO₃ 2- Step-4:Now we see that the charge of calcium and carbonate ion is equal.Thus we get the following formula of calcium carbonate. CaCO₃ Step-5:Now watch this video. Continue

【●】H2SO4 + NaOH ||Sulfuric acid(H2SO4) and Sodium hydroxide(NaOH)--What is the reaction between sulfuric acid and sodium hydroxide?

February 14, 2019

Sulfuric acid and Sodium hydroxide Hello,you are in right place to know about the reaction between sulfuric acid and sodium hydroxide. Sulfuric acid is an acid because it has hydrogen ion.The formula for sulfuric acid is H₂SO₄.It is a strong acid. Sodium hydroxide is a base because it has hydroxide ion.The chemical formula for sodium hydroxide is NaOH.It is a strong base. Read this:CO Lewis Structure Read:CO2 Lewis Structure Sulfuric acid(H2SO4) and Sodium hydroxide(NaOH) Acid reacts with base to form salt and water.This type of reaction is called acid base neutralization reaction. In case of sulfuric acid and sodium hydroxide,acid-base neutralization reaction will happen. Sulfuric acid reacts with sodium hydroxide and produce sodium sulphate(Na₂SO₄) and water(H₂O).Here sodium sulphate(Na₂SO₄) is a salt beacause its positive part has come from base and negative part has ...

【】CO Lewis Structure ,Valence Electrons ,Formal Charge ,Polar or Nonpolar

December 15, 2018

CO Lewis Structure Answer: CO Lewis structure(carbon monoxide electron dot structure) is that type of structure where we show the total ten valence electrons of CO as dots , or dots and dashes(-).In Lewis structure,it is common that a bonding pair of two electrons can be shown by dash(-) or dots(●●) but a lone pair of two electrons is shown by dots[●●]. CO Lewis Structure In CO Lewis structure,the carbon atom follows the octet rule and the oxygen atom also follows the octet rule.So,CO follows the octet rule for all the atoms. In CO Lewis structure,we get five pairs of electrons.Out of five pairs of electrons,CO has three bond pairs and two lone pairs of electrons.Here carbon has one lone pair and oxygen has one lone pair of electrons. Explanation: Today we are going to learn to draw CO Lewis structure (Carbon monoxide Lewis structure) in just few steps. CO Lewis Structure CO Lewis Structure Setup Steps There are 5 steps that you need to follow...

How to Convert Ethanoic Acid to Ethene

September 04, 2018

Look at the following steps to convert ethanoic acid to ethene. Step-1 : Ethanoic acid is reduced by lithium aluminum hydride in presence of dry ether and we get the product ethanol. Step-2: Ethanol reacts with phosphorus pentachloride and produce chloro ethane. Step-3: Chloro ethane reacts with alcoholic potassium hydroxide and produce ethene. Next How to Draw Lewis Structure for CO2

【】How to Draw Lewis Dot Structure

December 16, 2018

Hello, Everyone! today we are going to know how to draw Lewis structure or Lewis dot diagrams for atoms,ions and simple molecules. How to find out valence electrons of an element? Before I begin, I would like to ask you a question:how many valence electrons does chlorine have? For getting the answer of that question we need to look at the periodic table. Notice that within any given column all the elements have the same number of valence electron. To get valence electron's number, all we have to do is to count the columns starting from left.Skip the transition metals and bear in mind that the only exception to this is helium atom, which has only 2 valence electrons(duet) ,not 8. Now find chlorine in the periodic table. Remember that Chlorine's symbol is Cl. See it in the 7th column. That indicates us that it has 7 valence electrons. If you do electronic configuration of chlorine, then you will see that the oute...

August 28, 2018

How does ethane become ethene and Convert ethene to ethane Convert ethene to ethane How does ethane become ethene Next

【】SO2 Lewis Structure ,Valence Electrons ,Formal Charge,Polar or Nonpolar

October 27, 2019

SO2 Lewis Structure Answer: Here is the definition of SO2 Lewis structure. SO2 Lewis structure (sulfur dioxide electron dot structure) is that type of diagram where we show the total 18 valence electrons of SO2 as dots , or dots and dashes(-).In Lewis structure,it is common that a bonding pair of two electrons can be shown by dash(-) or dots(●●) but a lone pair of two electrons is shown by dots[●●]. In SO2 Lewis structure,there are two double bonds that are going from the atom sulphur to oxygens. In SO2 Lewis structure ,there are totally five lone pairs of electrons.The each oxygen has two lone pairs of electrons and the sulphur atom has one lone pair of electrons. In SO2 Lewis structure ,the oxygen atoms follow the octet rule but the sulfur atom don't follow the octet rule.It has more than eight electrons. In SO2 Lewis structure,we get nine pairs of electrons.Out of nine pairs of electrons,SO2 has four bond pairs of electrons and five lone pairs of electron...

【】What Is the Potassium (K) Electron Configuration?

January 11, 2019

Ground State Electron configuration for Potassium (K): 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ ●Expanded Electron Configuration of Potassium (K) : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ ● Abbreviated Electron Configuration for Potassium (K) : [Ar] 4s¹ ● Una bbreviated Electron Configuration for Potassium (K) : : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ ●Noble Gas Electron Configuration for Potassium: [Ar] 4s¹ ●Longhand Electron Configuration for Potassium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ ●Short hand Electron Configuration for Potassium : [Ar] 4s¹ Electron Configuration chart for Potassium Explanation: Here is the way you can follow to write the electron configuration for potassium (K) in just 5 steps. Step-1: To do electron configuration of potassium, we have to know the atomic number of potassium. The atomic number of potassium is 19.So potassium has 19 electr...

【】How to Write the Electron Configuration

January 04, 2019

Electron configuration of an element means the arrangement of electrons among different orbitals of that element. Now we are going to know how to write electron configuration of any element of the periodic table.To write electron configuration of an element,we will follow just 5 steps. Step-1: To write electron configuration of any element,we have to know the atomic number of the element.For example,The atomic number of bromine is 35.So bromine has 35 electrons and 35 protons.Look how I find the electron configuration of this element.This process is applicable for all the elements of the periodic table. Step-2: ( How do you remember the order of electron configurations?) Now we are bound to memorize the following sequence of the orbitals. s...