The hydrides of group 5A are NH3NH3, PH3PH3, AsH3AsH3, and SbH3SbH3. Arrange them from highest to lowest boiling point.

Q: Which of the following compounds is likely to have the lowest melting point? NaCl CS2 Pb…

A: Melting point: The temperature at which a solid substance melts to achieve liquid state. Melting…

Q: Complete and balance the following:(a) AsCl3(l) 1 H2O(l) → (b) Sb2O3(s) + NaOH(aq) →

A: Given reactions,        (a)  AsCl3(l) + H2O(l)  →(b)  Sb2O3(s) + NaOH(aq)  →

Q: Define valency by taking examples of silicon and sulphur?

A: The electrons, protons, and neutrons are the core of an atom. The electrons are the species that…

Q: to

A: The compound FeCaSi2O6 have a polymer unit called Si2O6⁴- .    This unit is called inosilicate.

Q: Oxygen forms double bonds in O2, but sulfur forms single bonds in S8. Why?

A:

Q: what is the lewis structure of ICl4- and what is its geometry?

A:

Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…

Q: What is the electron- pair geometry of the central oxygen atom of O-Zone (O3) ?

A: Ozone molecular formula O3  In ozone Central oxygen atom can share 3 electron pairs .

Q: . Give the formula of the substance formed after the addition of water to sulfur dioxide.

A: The chemical formula of water is H2O and chemical formula of sulfur dioxide is SO2.

Q: Write a balanced chemical equation that shows the formation of pentanoic acid from the elements…

A: In the balanced equation all the species involved should be in their standard state. The standard…

Q: Describe the structure and bonding in silicon dioxide and carbon dioxide

A: Silicon dioxide consists of Si and O atoms. All atoms in SiO2 are bonded to each other by the…

Q: How are Covalent carbides formed?

A: The formation of covalent carbides has to be given,

Q: What is the atom ratio between Cand H in C2H5OH? O 2/1 O 2/5 O 1/5 O 2/6

A: Atom ratio means the ratio of number of atoms of elements present in a compound.

Q: 21. Phosphorus trichloride, :PClI, has the following molecular shape. A. tetrahedral B. trigonal…

A: To know the shape of a molecule we  should have idea of VSEPR theory and the type of hybridisation…

Q: Complete and balance the following:(a) AsCl₃(l) +H₂O(l) → (b) Sb2O₃(s) +NaOH(aq)→

A: a) The reactants are  1) AsCl₃(l) 2) H₂O(l)  Hence the reaction taking place will be double…

Q: 7 Under what conditions can liquid nitrogen be formed by

A: we know,the critical temperature [Tc] is the maximum temperature at which the molecules can exist as…

Q: Write two balanced chemical equations in which sulfuric acid acts as an oxidizing agent.

A:

Q: Nitrogen is found in nature as N2(g). Would you expect phosphorus to be found innature as P2(g)?…

A: Nitrogen has a smaller size due to which it forms p∏-p∏ multiple bonds with itself. It has high bond…

Q: Why water has the highest boiling point compare with hydrogen floride (HF) , and ammonia (NH3)?

A: Boiling point depends on two factors: Electronegativity of the central atom. Number of H-bonds…

Q: In what ways are the electronic structures of the group 14 (4A) elements similar? In what ways are…

A: Ans. Group 14 elements have same valence electrons i.e valency. Group 14 elements have different…

Q: Can we use the following Lewis structure to represent the structure of the carbonate ion (CO,² )?…

A:

Q: The boiling points of group 16 binary hydrides are as follows: H2O 100 oC; H2S -60 oC; H2Se -41 oC.

A: Boiling points is directly affected by the intermolecular forces. Stronger the intermolecular…

Q: All of the following describe the properties of water except: A. It has an unusually high boiling…

A: Option A is true water exhibits higher boiling point compared to other group 16 hydrides as the…

Q: K/U Under what two conditions car an ionic compound conduct an electric curren ?

A: Ionic compounds : These are the compounds which are made up of ions in which are positively charged…

Q: What is the oxidation number of arsenic in K3AsO4? O +6 O +3 O +5 O +8

A:

Q: Which of the following five diagrams correctly represents the structure of BrCl4*?

A: Option C is correct answer

Q: What is the oxidation number of N in N2 O4?

A:

Q: Two molecules of borane can come together to form an unusual bond using two electrons. How many…

A: Boron-hydrogen-boron  bridge bond is a 2 electron bond and is called 3-center , 2-electron bond

Q: 191. Which of the following period 3 chlorides would be expected to have the highest melting point?…

A: The given period 3 chlorides are,

Q: Illustrate the  Relationship among Boiling Points, Dipole Moments,and Polarizability of Some Binary…

A: To illustrate the relationship between the boiling points, dipole moments, and polarizability of…

Q: Nitrogen and phosphorus are elements from the same group. Which of the following reasons is NOT A…

A:

Q: If a manufacturing site consumes 65 metric tons (1 metric ton = 1000 kg) of sulfur with unlimited…

A:

Q: Can sodium nitrite form H-bonds with water?

A: Sodium nitrite is NaNO2  It is an ionic compound

Q: What is the Lewis Structure for P4, its electron geometry, and molecular geometry?

A: The Lewis structure or molecular skeleton is also known as electron dot structure. It is the…

Q: What is the oxidation number of sulfur in Na2S2O3? O +2 O +6 O +12 O +4 O +3

A:

Q: If PF3 is covalent, state its structure using the VSEPR model, and if the molecule is polar or…

A: PF3 is a covalent compound which is formed by sharing of electrons between the phosphorus and…

Q: Identify the mole ratio of hydrogen peroxide (H 2 O 2 ) to water (H 2 O)

A: Mole ratio : Mole ratio is the ratio between the amounts in moles of any two species involved in a…

Q: Which of the following has the largest covalent radius ?   Mg Ca Sr Ba

A: Covalent radius of an element is defined as the half of the internuclear distance between two atom…

Q: Why are lithium halides covalent in nature?

A: Covalent compounds are formed by the sharing of electrons.

Q: Which of the following is expected to have the lowest melting point? I3D II IV O II O IV O O o o

A: Melting point of a compound depends on the strength of intermolecular forces. Greater is the…

Q: why halogens are highly volatile in nature?

A: Boiling point of a molecule depends upon the intermolecular force present in it. If the…

Q: Which side of the structure of KHP is more polar than the other?

A: Organic compounds are the compounds which are mainly composed C and H atoms. These compounds also…

Q: (b) Is boron a metal or a non-metal? Give reasons for your answer. (c) Why is aluminium a useful…

A: Element can be classified as metal and non metal

Q: Does it make sense that LiH is more stable than other Group 1 hydride compounds?  (Choose the best…

A: Yes LiH is more stable.

Q: 12. Which nitrogen has the highest electron density? HN Н2 А. 1 В. 2 С. 3 D. 4 IZ ZI

A: Ans: C, the nitrogen labelled with 3 has highest electron density

Q: Which of the following compounds has the highest boiling point? Не Li Be B. Ne 14 17 Na Mg Al Si ci…

A: Answer:- This question is answered by using the simple concept of boiling point which depends on the…

Q: Ionic hydrides are primarily compounds of hydrogen and nonmetals, in which the bonds are evidently…

A: Ionic hydrides are primarily compounds of hydrogen and nonmetals,   The above statement is not fully…

Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.