Why is Group I elements known as the most electropositive element?

Q: An element reacts with oxygen to give a compound with a high melting point. This compound is also…

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Q: What is lithium?

A: Pure substances that are made up entirely of atoms and have the same number of protons in their…

Q: Claim: Reactivity of alkali metals increase down a group, or column, in the periodic table.…

A: The alkali metals are six chemical elements in Group 1, the leftmost column in the periodic table.…

Q: Why does a salt compound give off light/a colored flame when burned?

A: When the salts are burned, they are basically provided with the energy  hence the electrons present…

Q: Summarize the physical properties of the elements ingroup 14.

A: The elements present in group 15 are Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb),…

Q: Explain quaternary Metal oxides?

A: Metal oxides are made up of metal cation and oxygen anion. for distinguishing the metal oxides , one…

Q: Explain why phosphorus forms pentahalide whereas nitrogen and bismuth do not?

A: The geometry (or hybridization) of a molecule depends on the electrons present in the outer shell as…

Q: The alkali metals play virtually the same general chemical role in all their reactions. (a) What is…

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Q: (a) Why is calcium generally more reactive than magnesium?(b) Why is calcium generally less reactive…

A: a.

Q: Predict whether each of the following oxides is ionic ormolecular: SnO2, Al2O3, CO2, Li2O, Fe2O3,…

A: The compounds made up of a metal and a non metal tend to be ionic substance and compounds made up of…

Q: A ferromagnetic element is one that O a there is no magnetic force Ob magnets strongly attract…

A: The ferromagnetic elements are:

Q: How do alkali metals differ from alkaline earth metals in atomic structure and general properties?

A: The alkali earth metal include: Li, Na, K, Rb, Cs and Fr. They have a valence electronic…

Q: Define Alkali metals

A: The modern periodic table consists of various groups consisting of various elements. These are…

Q: Define actinides

A: Actinides have to be defined.

Q: Which chromium species will disproportionate in acid and base?

A: Given is the Frost diagram for Cr species. In a Frost diagram, a line between two states is drawn,…

Q: halogens are considered to be most reactive non metallic element. Why?

A: Halogens belong to group 17. They have 7 valence electrons. They are short of only one electron to…

Q: The d-block element among the following is a. Lead Ob. Thorium O C. Helium d. Osmium

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Q: The reactivity of group 1 metals INCREASES down a group but the reactivity of group 17 nonmetals…

A: Interpretation- Reason, why the reactivity of group 1 metals increases down a group but the…

Q: Do you expect fluorine to be the strongest or weakest oxidizer among the halogen family? Which halid…

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Q: Which of these oxides is not amphoteric Mgo a O A1203 .b O Zno.cO Sno.d

A: Amphoteric oxides are those metal oxides which show basic as well as acidic behaviour.  So, first we…

Q: 42. Which of the following group make a bridge between high electropositive and high electronegative…

A: A periodic table is divided into groups and periods: There are 8 groups that belongs to main group…

Q: The less electropositive element is: A. Na B. Be C. Li D. Mg

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Q: What are the identidication tests used for the group III and IV elements? Give comprehensive…

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Q: how can you diffrentiate between lanthanides and actinides ?

A: The long form of the periodic table is a tabular arrangement of all known elements. Here the…

Q: This elements produced bright yellow flame when used in fireworks. * Ве Ca O Sr Mg Group 2 elements…

A: Answer Q=1 which element produce bright yellow flame when used in…

Q: State reasons for the following :(i) Cu (I) ion is not stable in an aqueous solution.(ii) Unlike…

A: Co-ordination compounds are formed when the metal ion is bonded to the ligand which donates its…

Q: Why does lithium form covalent bond unlike other alkali which forms ionic bond?

A: Generally greater polarizing power of ion increases the covalent character. Lithium forms covalent…

Q: What are the identidication tests used for the group III and IV elements? Give comprehensive…

A: Identification test for group III and group IV cations are needed to be discussed.

Q: Which of the following statements is/are TRUE? Choose all that apply. O Select all that apply Mg has…

A: Electron Affinity - It is the energy released from a neutral atom when an electron is added to it in…

Q: Discuss each conclusion from a study of redox reactions:(a) The nitride ion functions only as a…

A: Redox reactions are the combination of reduction and oxidation reactions. Oxidation is defined as…

Q: Fictional, thus not on the periodic table. Lz, a transition metal, forms the compound LzS₂ when…

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Q: Predict whether the bonding in the oxides of the following elements is covalene or ioe Explain your…

A: The bonding in the oxides of the Aluminum and phosphorus is explained as follows.

Q: Which of the following is atransition metal? A. Barium B. Mercury C.     Cesium   D. Aluminium

A: A transition metal is defined as an element whose atom has a partly filled d sub-shell, or which can…

Q: Describe alkali metals?

A: The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (okay),…

Q: What is the trend in first ionization energies as one proceedsdown the group 7A elements? Explain…

A: The trend in first ionization energies in group 7A elements has to be given.

Q: Iron(II) fumerate (also called ferrous fumerate) is prescribed for patients suffering from iron-…

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Q: Nitrogen is relatively inert as compared to phosphorus. Why?

A: Nitrogen is relatively inert as compared to phosphorus. An explanation of the above statement has to…

Q: For each of these solids, state whether you would expect it topossess metallic properties: (a)…

A: TiCl4 and  ScN are ionic compounds and delocalization of electrons take place on the individual ions…

Q: Make the structure based on the Blomstrand-Jorgensen theory and calculate the effective atomic…

A: Blomstrand proposed that ammonia molecule could link together as CH2 chains in hydrocarbons, and…

Q: Why do Iodine crystals cause carbon tetrachloride solutions to change its colors? And why it (iodine…

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Q: Discuss each conclusion from a study of redox reactions:(a) The sulfide ion functions only as a…

A: Reducing agent is the substance which contains the element in the lowest oxidation state. While,…

Q: Why is it not possible to displace fluorine from metallic fluorides by any other halogens? Explain…

A: It is not possible to displace fluorine from metallic fluorides by any other halogens :