Define electronegativity. A neutral atom has high electronegativity. Describe what happens to this atom during ionic bond formation

Electronegativity is basically how strongly an atom is attracted to electrons and a neutral atom has a high electronegativity because it has yet to achieve its stable state of 8 valence electrons.

During an ionic bond formation, an atom gives or takes electrons to have a valence shell of 8 electrons. For example, a simple ionic compound such as NaCl has Na (Sodium) which has only one valence electron and wants to get rid of it and Cl (Chlorine) which has 7 electrons and needs just one. So Chlorine takes Sodium's one electron and they form an ionic compound.

Electronegativity, symbolized as χ, is the tendency of an atom to attract shared electrons to itself.

A neutral atom has high electronegativity. Describe what happens to this atom during

ionic bond formation.

Thus, the term “ionic bonding” is given when the ionic character is greater than the covalent character – that is, a bond in which a large electronegativity difference exists between the two atoms, causing the bonding to be more polar (ionic) than in covalent bonding where electrons are shared more equally.

2. What happens to a neutral atom with high electronegativity during an ionic bond?

When ionic bonds form, a metal donates one or more electrons, due to having a low electronegativity, to form a positive ion or cation. The non-metal atom has a high electronegativity, and therefore readily gains electrons to form a negative ion or anion.

Explanation:

What happens to a neutral atom during ionic bond formation?

A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. ... The properties of ionic compounds shed some light on the nature of ionic bonds.

How does electronegativity affect ionic bond formation?

Electronegativity of the atoms involved in a compound affects the ionic bonds. More electronegative elements have the tendency to form higher ionic character bonds with other elements. Elements that have high electronegativity, will form a bond with any atom that has more ionic character.

when 25.0 ml of 0.700 mol/l naoh was mixed in a calorimeter with 25.0 ml of 0.700 mol/l hcl, both initially at 20.0 °c, the temperature increased to 22.1 °c. the heat capacity of the calorimeter is 279 j/°c.

the equation for the reaction is:

naoh + hcl → nacl + h₂o

moles of hcl = 0.0250 l hcl ×

0.700

mol hcl

1 l hcl = 0.0175 mol hcl

volume of solution = (25.0 + 25.0) ml = 50.0 ml

mass of solution = 50.0 ml soln ×

1.00

ml soln

= 50.0 g soln

δt=t2-t1

= (22.1 – 20.0) °c = 2.1 °c

the heats involved are

heat from neutralization + heat to warm solution + heat to warm calorimeter = 0

q1+q2+q3=0

nδh+mcδt+cδt=0

0.0175 mol ×

δh

+ 50.0 g × 4.184 j·g⁻¹°c⁻¹ × 2.1 °c + 279 j°c⁻¹ × 2.1 °c = 0

0.0175 mol ×

δh

+ 439.32 j + 585.9 j = 0

0.0175 mol ×

δh

= -1025.22 j

δh=1025.22j0.0175 mol= -58 600 j/mol = -58.6 kj/mol

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