An element X has atomic number 17 and has mass no. 37.
Draw its orbital structure and state the position of X in the periodic-table.

An element X has atomic number 19.What will be the formula of its oxide?

An element has an atomic number 16. State the period to which it belongs.

An element 'P' has atomic number 56. What will be the formula of its halide?

An element A has 2 electrons in its, fourth shell. State position in the periodic table

An element has an atomic number 16. State whether it is a metal or non-metal.

An element has an atomic number 16. State the number of valence electrons.

An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide (a) Where in the periodic table are elements X and Y placed ? (b) Classify X and Y as metal (s), non-metal (s) or metalloid (s) (c) What will be the nature of oxide of element Y ? Identify the nature of bonding in the compound formed (d) Draw the electron dot structure of the divalent halide.

An oxide of an element X' having atomic number 23 has a magnetic moment of 1.732 BM. The oxidation state of X in the oxide is

Find the position of element with atomic number 35 in the periodic table

An element X has a mass number 4 and atomic number 2. Write the valency of this element.