Electronegativity - capacity to loss electrons - is representative for the reactivity of chemical elements; for metals low electronegativity is a high reactivity.
Elements with high electronegativity and small size, such as oxygen and fluorine, can react with larger elements in the group with a lower electronegativity. This is because the smaller, more electronegative atoms can "pull" electrons away from the larger atoms, leading to chemical reactions.
Electronegativity increases when atoms have a stronger ability to attract electrons in a chemical bond. This tendency is influenced by factors such as atomic size, where smaller atoms with more protons in the nucleus can pull electrons closer. Additionally, elements with a higher effective nuclear charge tend to have greater electronegativity. This trend is typically observed across a period in the periodic table, where electronegativity increases from left to right.
Assuming you mean electronegativity, it is 2.2 on the Pauling scale.
The hydrogen atoms have the much lesser electronegativity in water. That pole is slightly positive because of oxygen being so much more electronegative and having the electrons in the covalent bonds spend more time in it's orbital.
Elements with high electronegativity and small size, such as oxygen and fluorine, can react with larger elements in the group with a lower electronegativity. This is because the smaller, more electronegative atoms can "pull" electrons away from the larger atoms, leading to chemical reactions.
The attractive force that draws in surrounding electrons for chemical bonds is known as the electrostatic force of attraction. This force is generated between the positively charged nucleus of one atom and the negatively charged electrons of another atom, leading to the formation of a chemical bond between the atoms.
Electronegativity increases when atoms have a stronger ability to attract electrons in a chemical bond. This tendency is influenced by factors such as atomic size, where smaller atoms with more protons in the nucleus can pull electrons closer. Additionally, elements with a higher effective nuclear charge tend to have greater electronegativity. This trend is typically observed across a period in the periodic table, where electronegativity increases from left to right.
The electronegravity decreases as you go down the periodic table. As you go down the columns in the periodic table the atoms get bigger because there are more full shells of electrons (although the number electrons in the OUTER shell always stays the same for each element in the group). so because there are more shells the outer shell of electrons becomes increasingly further away from the nucleus this means they are shielded from the attractions of the positive nucleus' pull by the increasing number of inner shells. hope this was the answer you were looking for and that it made sense.