Determine the position of metalloids in the periodic table.

Write two names of metalloid.

Two point charge +16muC and -9muC are placed at 8 cm apart in air. Determine the position of the point at which the resultant electric field is zero.

What is electronegativity of an element? How does electromegativity vary in a period and in a group in the periodic table?

Mention the period of tan2x .

What is time period?

How were the position of cobalt and nickel resolved in the Modern Periodic Table?

What are metalloids or semi-metals? Write down the name of the metalloids along with their atomic number.