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Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 2 answers
Pawan Kumari 5 years, 2 months ago (9252141)
Dhawanpreet Kaur 5 years, 2 months ago (8957247)
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 2 answers
Pawan Kumari 5 years, 2 months ago (9252141)
Dhawanpreet Kaur 5 years, 2 months ago (8957247)
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Because lencho ,the farmer has asked god to send him 100 pesos but in return he has got only 70 pesos . And Lencho haven't thought that it is the mistake of god .the post office employees must have taken the remaining 30 pesos.so in afraid of loosing the money again Lencho has requested god to send the money not through the mail.
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Lencho became angry when he counted the money that God had sent him. He found that the money amounted to seventy pesos only whereas he had asked for hundred pesos. He believed that the post office employees have stolen the rest of the amount because God could never make a mistake.
Posted by Ruby Dahiya 5 years, 2 months ago (9649799)
- 0 answers
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Gaurav Seth 5 years, 1 month ago (2898529)
Lencho had full faith in God and hence, had written a letter to God asking for 100 pesos. But when he received the money and a letter from God, he was not happy. It was not his attitude to be happy with what he received, nor was he ungrateful to God. He was angry because he had received 70 pesos instead of 100. He did not doubt God for it. He wrote another letter to God asking him to send the rest of the money but not through the post-office as they were a bunch of crooks. This shows that Lencho had full faith in God and was confident that his desire would be fulfilled. It was Lencho’s innocent optimism that eventually led to his getting seventy pesos. Optimism and faith can lead to a happy life.
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 2 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.
In general, any element which corresponds to the d-block of the modern periodic table (which consists of groups 3-12) is considered to be a transition element. Even the f-block elements comprising the lanthanides and the actinides can be considered as transition metals.
However, since the f-block elements have incompletely filled f-orbitals, they are often referred to as inner transition elements or inner transition metals. An illustration detailing the position of transition metals on the periodic table along with their general electronic configurations is provided below.
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
lncho was a simple and poor farmer but he has indomitble faith in god. Lanco was a simple and poor farmers but he has indomitable faith in God one year he hoped for a good harvest if there was a good rainfall it rains but it brought hail Storms with that language crop was totally destroyed he was sure that god will help him therefore he wrote a letter to god seeking his help. when the postmaster read his letter he could not help saying i wish i had fith of a mn who wrote thi letter the postmaster and the employees collected 70 pesos and sent him.
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
After seeing Lencho's letter, the postmaster is deeply touched by the strong faith of Lencho in the God. The postmaster collects money from his colleagues and sends some money to Lencho. But the money sent by the postmaster is less than what the Lencho had demanded through his letter.
Posted by Kumkum D 5 years, 2 months ago (9518008)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Lencho did not want the money to be sent through the mail because he did not trust the post office employees and he assumed that they would have stolen money from his envelope. Lencho got angry when he counted the money. There were only seventy pesos in the envelope. He was confident that God could neither make a mistake nor deny him what he had requested. Therefore, he concluded that the post office employees must have taken the remaining thirty pesos.
Posted by Bhanu Pratap Pandey 5 years, 2 months ago (9955591)
- 2 answers
Yogita Ingle 5 years, 2 months ago (2577571)
अब्बासी क्रांति :
अरब में 'दवा' नामक एक आंदोलन ने उमय्यद वंश को उखाड़ फेंका। 750 ईस्वी में उमय्यद वंश का स्थान अब्बासी खलीफाओं ने ले लिया। उमय्यद वंश को मुस्लिम राजनीतिक व्यवस्था के केंद्रीयकरण के लिए भारी कीमत चुकानी पड़ी। इस घटना को 'अब्बासी क्रांति' का नाम दिया जाता है।
अब्बासियों ने उमय्यद शासन को दुष्ट बताया और यह दावा किया कि वे पैगंबर मोहम्मद के मूल इस्लाम की फिर से स्थापना करेंगे। अब्बासियों का विद्रोह पूर्वी ईरान में स्थित खुरासन में प्रारंभ हुआ। यहां पर अरब और ईरानियों की मिली-जुली संस्कृति थी। यहां पर अरब सैनिक मुख्यत: इराक से आए थे। उन्हें सीरियाई लोगों का प्रभुत्व पसंद नहीं था। खुरासन के अरब नागरिक भी उमय्यद शासन से घृणा करते थे।
Posted by Ashutosh Mishra 5 years, 2 months ago (9807538)
- 1 answers
Ʋß么Thanos ㅤㅤ 5 years, 2 months ago (9757488)
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 1 answers
Meghna Thapar 5 years, 2 months ago (6237)
A block of the periodic table is a set of elements unified by the orbitals their valence electrons or vacancies lie in. The term appears to have been first used by Charles Janet. Each block is named after its characteristic orbital: s-block, p-block, d-block, and f-block.
The block names (s, p, d, and f) are derived from the spectroscopic notation for the value of an electron's azimuthal quantum number: shape (0), principal (1), diffuse (2), or fundamental (3). Succeeding notations proceed in alphabetical order, as g, h, etc.
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 1 answers
Meghna Thapar 5 years, 2 months ago (6237)
Transition metals share many similar properties including: They can form many compounds with different oxidation states. They can form compounds with different colors. They are metals and conduct electricity. Properties of transition elements include:
- have large charge/radius ratio;
- are hard and have high densities;
- have high melting and boiling points;
- form compounds which are often paramagnetic;
- show variable oxidation states;
- form coloured ions and compounds;
- form compounds with profound catalytic activity;
Subsequently, question is, why do all metals have similar properties? The reason that that elements in the same 'group' have similar chemical properties is because they have the same number of valence electrons. Iron when reacting in chemical reactions loses electrons from its 4s orbital instead of its d orbital.
Posted by Priti Ojha 4 years, 9 months ago (8368279)
- 5 answers
Posted by Sandeep Pal 5 years, 2 months ago (6824579)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
| 1 | Definition | Voltage, also called electromotive force is simply the energy per unit charge. In other words, voltage is the difference in electric potential between two points. | Current is just the rate of flow of electric charge. In simple words, the current is the rate at which electric charge flows in a circuit at a particular point. |
| 2 | Unit | The SI unit of voltage is Volts (V).
Note: 1 Volt= 1 Joule/coulomb. |
The SI unit of current is Ampere (A).
Note: 1 Ampere = 1 coulomb/second. |
| 3 | Denotation | Voltage is denoted by “V”. | Current is denoted by “I”. |
| 4 | Measuring Instrument | Voltage can be measured by using a Voltmeter. | Current can be measured by using an Ammeter. |
| 5 | Inter-relation | Voltage is the cause of the current. | Current is the effect of the voltage i.e. current cannot flow without voltage. |
| 6 | Formula | One of the formulas to calculate voltage is:
V= Work done/Charge |
One of the formulas to calculate current is:
I= Charge/ Time |
Posted by Har Har Mahadev 🙏 5 years, 2 months ago (5614857)
- 1 answers
Posted by Rupa Kumari 5 years, 2 months ago (9921049)
- 5 answers
Sanket Patil 5 years, 2 months ago (9957169)
Bhumika Pal 5 years, 2 months ago (9943367)
Siya Panchal 5 years, 2 months ago (9918108)
Om Patel 5 years, 2 months ago (9312528)
Anugraha Mahesh 5 years, 2 months ago (9945271)
Posted by Lena Saju 5 years, 2 months ago (9946930)
- 2 answers
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
As discussed earlier, the elements zinc, cadmium, and mercury are not considered transition elements since their electronic configurations are different from other transition metals. However, the rest of the d-block elements are somewhat similar in properties and this similarity can be observed along each specific row of the periodic table. These properties of the transition elements are listed below.
- These elements form coloured compounds and ions. This colour is explained by the d-d transition of electrons.
- There is a relatively low gap in energy between the possible oxidation states of these elements. The transition elements, therefore, exhibit many oxidation states.
- Many paramagnetic compounds are formed by these elements, because of the unpaired electrons in the d orbital.
- A large variety of ligands can bind themselves to these elements. Due to this, a wide variety of stable complexes are formed by transition elements.
- These elements have a large ratio of charge to the radius.
- Transition metals tend to be hard and they have relatively high densities when compared to other elements.
- The boiling points and the melting points of these elements are high, due to the participation of the delocalized d electrons in metallic bonding.
- This metallic bonding of the delocalized d electrons also causes the transition elements to be good conductors of electricity.
Posted by Jagdeep Singh Jassi 5 years, 2 months ago (9955486)
- 0 answers
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Zn, Cd, Hg are not regarded as transition element Because they have the completely filled d-sub-shell with outer electronic configuration (n-1)d10ns2
Posted by Lena Saju 5 years, 2 months ago (9946930)
- 2 answers
Posted by Har Har Mahadev 🙏 5 years, 2 months ago (5614857)
- 5 answers
Har Har Mahadev 🙏 5 years, 2 months ago (5614857)
Posted by Lena Saju 5 years, 2 months ago (9946930)
- 2 answers
Posted by Lena Saju 5 years, 2 months ago (9946930)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Malathion is a pesticide that is used to kill insects that harm crops.
Posted by Lena Saju 5 years, 2 months ago (9946930)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Large grasses cultivated for their nutritious seeds are called cereals.
Posted by Dgf Chd 5 years, 2 months ago (4635669)
- 1 answers
Yogita Ingle 5 years, 2 months ago (2577571)
Transition elements are those elements in which the atoms or ions (in stable oxidation state) contain partially filled d-orbital. These elements lie in the d-block and show a transition of properties between s-block and p-block. Therefore, these are called transition elements.
Elements such as Zn, Cd, and Hg cannot be classified as transition elements because these have completely filled d-subshell.
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Aman Kumar 5 years, 2 months ago (9742259)
2 Thank You