Electronegativity

Q. electron affinity order of 3rd period

Q. Why is nitrogen more electronegative than phosphorus ?

Q.

Group VII elements are strong non metals, while group I elements are strong metals. Explain.

Q. While going right to left across a period in the modern periodic table the electronegativity of elements:

1. increases
2. decreases
3. remains unchanged
4. decreases first then increases

Q. Which of the following elements can lose electrons to attain configuration of nearest noble gas?

1. Sulphur
2. Oxygen
3. Barium
4. Chlorine

Q.

Name the following:

The tendency of an atom to attract electrons to itself when combined in a compound

Q.

Arrange the elements Ca, Sr, Mg, Ba in increasing order of their metallic character.

Q. Na+ion is smaller than Na atom while Cl-ion is bigger than Cl atom.Why?

Q.

Among alkali metals __ has the smallest atomic radius.

Q.

What is the most active element in $\mathrm{group}-17$?

Q. What is electronegativity?

Q. 12. what is the screening constant for gallium

Q. Arrange the following elements in the increasing order of their metallic character. [2 marks]

Lithium, Sodium, Potassium, Rubidium, Caesium

Q.

Which atom will show maximum electronegativity?

1. Fifth

2. Third

3. First

4. Second

Q. Metallic character _________ down the group in the periodic table.

1. increases
2. decreases
3. increases and then decreases
4. decreases and then increases

Q. electron affinity? (trends of modern table)

Q. The increasing order of electronegativity among the following elements is:

1. boron < nitogen < carbon < oxygen < fluorine
2. boron < carbon < oxygen < nitogen < fluorine
3. boron < carbon < nitogen < oxygen < fluorine
4. fluorine < oxygen < nitogen < carbon < boron

Q. We all know that Hydrogen has 1 proton and 1 elecron and no neutron.As per rule proton and electron attracts each other so why electorn rotate aroun proton ? why they dont get stick to each other ?

Q. Element X has the second highest electronegativity in the modern periodic table. To which group and period does this element belong to?

1. 17th group and 2nd period
2. 14th group and 3rd period
3. 16th group and 2nd period
4. 11th group and 3rd period

Q.

Elements ‘X’ and ‘Y’ are adjacent elements in the s block of the periodic table. ‘X’ is on the left, and ‘Y’ is on the right. Provide a detailed comparison of all the periodic properties of ‘X’ and ‘Y’.

Q. 46.On which scale does electronegativity is measured as that of "H" is 2.1 ?

Q. is the most electropositive stable element in the modern periodic table.

1. Cs
2. Li
3. F
4. At

Q. 49. How to calculate effective nuclear charge for both atoms and ions

Q. 80.which is the most highly reactive radioactive element

Q. While going from right to left across a period in the modern periodic table, the electronegativity of elements:

1. increases
2. decreases
3. remains unchanged
4. decreases first then increases

Q. is the most electropositive stable element in the modern periodic table.

1. Cs
2. Li
3. F
4. At

Q. The group in the modern periodic table having the highest electronegativity is .

1. halogens
2. alkali
3. alkali earth
4. chalcogens

Q.

With reference to the long form of the periodic table fill in the blanks with appropriate words.

______metals and alkaline______metals are placed in group 1A and 2A respectively on the left-hand side of the periodic table.

Q.

Name one halogen other than chlorine, bromine and iodine.

Q. is the most electropositive stable element in the modern periodic table.

1. Cs
2. Li
3. F
4. At