The tendency of an atom to attract shared pair of electrons to itself when forming a chemical bond is known as

1. Electron affinity
2. Electronegativity
3. lonization potential
4. Nuclear charge

Elements A & B have electronic configuration : 8 & 13 respectively. The chemical formula formed between A & B will be:

1. AB
2. B₃A₃
3. A₂B₃
4. B₂A₃

The electronic configuration of four elements is:

(i) W: 2,6
(ii) X: 2,8
(iii) Y: 2,8,1
(iv) Z: 2,8,7

Which pair of atoms will form a covalent compound.

1. Two atoms of W
2. Two atoms of X
3. An atom of W & an atom of X
4. An atom of Y & an atom of Z

Element with an atomic number 19 will:

1. Accept an electron & get oxidized
2. Accept an electron & get reduced
3. Lose an electron & get oxidized
4. Lose an electron & get reduced