Advertisements
Advertisements
प्रश्न
Element A has 2 electrons in its M shell. Element B has atomic number 7.
Write equations to show how A and B form ions.
Advertisements
उत्तर
\[\ce{A - 2e- -> A^2+}\] (cation)
\[\ce{B + 3e- -> B^3-}\] (anion)
APPEARS IN
संबंधित प्रश्न
State the reason to explain why covalent compounds "have low melting and boiling points."
Name the element whose one of the allotropic forms is buckminsterfullerene.
Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble? What is this electron configuration?
Compare the properties of ionic compounds and covalent compounds.
A saturated hydrocarbon has fifty hydrogen atoms in its moleucle. The number of carbon atoms in its molecule will be ______.
Observe the straight chain hydrocarbons given below and answer the following
questions :
i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
ii) Name these straight chains.
iii) Write their chemical formulae and number of – CH2 - units.
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
What is a covalent bond?
