Supply the missing word from those in the brackets not write out the sentence ?
If an element has seven electrons in its outermost shell then it is likely to have the .................... (largest/ smallest atomic size among all the elements in the same period).

Fill in the blanks by selecting the correct word from brackets : If an element has seven electrons in its outermost shell then it is likely to have the ................... (largest/ smallest) atomic size among all the elements in the same period.

Fill in the blank by selecting the correct word: If an element has seven electrons in its outermost shell then it is likely to have the _______ [largest/smallest] atomic size among all the elements in the same period.

Supply the missing word from those in the brackets not write out the sentence ? If an element has a low ionization energy then it is likely to be ........... (metallic/non-metallic).

If an element of period 2 has one electron in its outermost shell, then it is likely to be a __________. (metal/nonmetal)

An atom of an element X has 2 electrons in its N shell. Write the formula of its chloride.

An atom of an element X has 2 electrons in its N shell. Where is this element placed in the periodic table ?

Select the correct answer from the choice in bracket to complete each sentence:- An element 'X' has six electrons in its outer or valence shell. Its valency is _________ [+2/-2/-1].

An atom X has 2,8,7 electrons in its shells. It combines with Y having 1 electron in its outermost shell. Write the formula of the compound formed.

(a) How is the valency of an element determined if its electronic configuration is known? Determine the valency of an element of atomic no. 9 (b) Given below are some elements of the Modern Periodic Table. Atomic numbers of the elements are given in the parentheses: A(4), B(9), C(14), D(19), E(20) (i) With the help of the electronic configuration, find out which one of the above elements will have one electron in its outermost shell? (ii) Which rwo elements belong to the same group? Give reasons for your answer. (iii) Which one of the above elements belonging to the fourth period has bigger atomic radius and why?.

The group in the modern periode table, in which all the elements do not have same number of electrons in their valence shell is :