Three elements which are metalloids

Mendeleev predicted the existence of certain elements not know at that time. He named two of these elements as eka-aluminium and eka-silicon. a. Name the elements which have taken the place of these elements. b. Mention the group and period of these elements in the modern periodic table. c. Which one of these two elements is a metalloid? d. How many valence electrons are present in eka-silicon? e. Eka-aluminium forms a chloride. What is its formula?

State whether the following statement is True' or False'. If false, write the correct statement for the same. F-block elements are metalloids

Study the below given periodic table in which four elements are indicated by alphabets: A, B, C and D. Which element is a metalloid? Name this element.

Select the appropriate options and complete the following paragraph. (metals, nonmetals, metalloids, four, seven, s-block, p-block, d-block, f-block) On the basis of electronic configuration, elements in the modern periodic table are classified into ________ block. Groups 1 and 2 elements are included in _______ and all these elements are metals (except hydrogen). Group 13 to 18 elements are included in ________. This block contains metals, nonmetals and metalloids. Groups 3 to 12 elements are included in _______ and all these elements are _______. elements shown at the bottom of the periodic table i.e., Ianthanides and actinides constitute ______ and all these elements are metals.

Three elements with filled outermost shell

Three elements having 7 electrons in their outermost shell

Which one of the elements is most metallic

Study the below given periodic table in which four elements are indicated by alphabets A,B,C and D Which element is a metalloid?Name this elemnt and also mention the metalloids in modern periodic table

Three elements having a single electron in their outermost shell .