Chemistry
An element has 2 electrons in its N shell.
(i) What is its atomic number ?
(ii) State its position in periodic table
(iii) Is it a metal or a non-metal ?
(iv) State the name assigned to this group.
(v) What is the valency of this element ?
Related Questions
How do the following vary on moving from left to right in the third period of the periodic table : (i) valence electrons and (ii) valency
Name the type of elements, which have their
(i) outermost shell complete
(ii) outermost shell incomplete
(iii) two outermost shell incomplete
(iv) one electron short of octet
(v) two electrons in the outermost orbit.
Name
(a) An alkali metal in period 3 and halogen in period 2.
(b) The noble gas with 3 shells.
(c) The non-metals present in period 2 and metals in period 3.
(d) The element of period 3 with valency 4.
(e) The element in period 3 which does not form oxide.
(f) The element of lower nuclear charge out of Be and Mg.