Question

an element X has atomic number 19: i)write electronic configuration ii) to which of modern periodic table it belongs? how to deicide its position iii) state formula and nature of compound formed by element X.

Answer 1

electronic configuration-2,8,8,1

Answer 2

ec - 2,8,8,1
it belong to 1 group 4 period .
in a group its position is 4 as in a group the no of outermost shell increase by one shell with same valency.in a period it is according to valency.
the compound formed is ionic