The lowest electronegativity of the element from the following atomic number is

Choose the correct answer from the options A,B,C&D given: The most electronegative element from the following elements is:

The electronegativity of elements varies with increase in atomic number in groups and periods as

This transition element with the lowest atomic number is

This transition element with the lowest atomic number is

This transition element with the lowest atomic number is

This transition element with the lowest atomic number is

Electronegativity is defined as attracting power of sharing pair of electron between covalently bonded atoms. Electronegativity is defined on different scales, F has height electronegativity between all elements. Which of the following oxide is basic in nature ?