Answer:
niobium 1s22s22p63s23p64s23d104p65s24d3
1 lb=453.592 grams
So he gained 453.592 pounds
Answer:
A high difference in electronegativity will be present in ionic compounds since the electrons are transffered from the element less electronegative to the element more electronegative.
A small difference in electronegativity is present in molecular compounds (covalent bonds). None of the elements is strong enough to attract the electrons so the electrons are shared.
Explanation:
A high difference in electronegativity will be present in ionic compounds since the electrons are transffered from the element less electronegative to the element more electronegative.
A small difference in electronegativity is present in molecular compounds (covalent bonds). None of the elements is strong enough to attract the electrons so the electrons are shared.
Answer is: from strongest to weakest attractions: ionic forces, covalent forces, hydrogen forces, Van der Waals forces.
Ionic bond is the electrostatic attraction between oppositely charged ions; ionic bond is very strong.
For example, sodium chloride (NaCl) has ionic bond between sodim cation and chlorine anion.
Covalent bond is bond between nonmetals. Hydrogen and oxygen are nonmetals.
For example, in water, atoms of hydrogen (H) and oxygen (O) are connected by polar covalent bonds.
Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.
For example, because of hydrogen bonds, water has higher melting and boiling temperatures than H₂S.
There are two kinds of Van der Waals forces: weak London dispersion forces and stronger dipole-dipole forces.
Answer:
Microliters =
Explanation:
SI unit of volume is liter.
..............................(1)
1dm=10cm
.................(2)
replacing value of from equation (1) in equation (2)
...................(3)
but
....................(4)
replacing value of 1 liter from equation (3) in equation (4)
on solving further ,we get
Microliters =