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The electrostatic force of attraction between the
positive nucleus and the negative electron must.
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Which force must be overcome to melt Krypton?
Krypton is gas and does not need melting.
Why there is big gap between first and second ionization energies?
Ionization energies are the amount of energy needed to remove an electron from an atom in the gaseous state, thereby giving the atom a positive charge and making it an ion. Ions get a +1 charge for each electron lost. It is this positive charge of the atom that makes the second ionization energy considerably greater than the first. Not only does the second electron have to overcome the initial attractive forces to nucleus, it must also overcome the extra +1 charge the atom has after the loss of the first electron, which simply takes more energy.
What chemical force must be overcome in order to separate the two DNA strands during replication?
h bond
Why the value of electron affinity is positive for noble gases?
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. They will not accept any more electrons and hence they have positive electron affinity.
Why petrol evaporates more rapidly than water?
Water is polar, with the oxygen slightly negative and the hydrogens slightly positive (approximately 5 kcal/mole). Hence, individual water molecules are attracted to each other (+/-) and orient according to their dipole moment. This attractive force must be overcome by applying heat in order to separate the molecules (heat of vaporization). Petrol is nonpolar, so the only attractive force that must be overcome is the much weaker Van Der Waals force (an induced dipole moment).
What is ionization energy needed for?
There is an attraction of the nucleus for electrons. This attractive force must be overcome to remove an electron. The energy to overcome this attraction and remove an electron from the atom is 'ionization energy'.
WHAT FORCE MUST BE OVERCOME TO REACH ORBIT?
gravity
When a rocket is launched into the sky what force must it overcome?
,.
What is the Definition of resistance force?
Resistance force is the force which an effort force must overcome in order to do work.
A comparison of the input force applied to a machine to the output force it must overcome?
Pulley
The force you must overcome using a machine?
think the answer is the word in your herat
What force must airplanes overcome to take-off?
Weight and Drag
What is the main force a rocket must overcome to reach orbit?
gravity
What is the force that birds must overcome while flying in the air?
Gravity
What is an unbalned force?
An unbalanced force is a force that causes change in motion. A force must also overcome friction before an object will move.
Why must a force be exerted on an object to change velocity?
To overcome the objects inertia
Why must a force be exerted on a object to change its velocity?
To overcome the objects inertia
