Name the type of elements which have outermost shell incomplete.

One Line Answer

Representative elements

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Chapter 1: Periodic Table, Periodic Properties and Variations of Properties - lntext Questions [Page 5]

Chapter 1 Periodic Table, Periodic Properties and Variations of Properties
lntext Questions | Q 15. (ii) | Page 5

Give two example of group 18 elements.

Name two elements in each case:

Transition element

Name an alkali metal in period 3 and halogen in period 2.

Give the symbol and valency of the following element and radical.

Bisulphite

The element which has the least tendency to lose electrons is ______

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?

Which one of the following elements exhibit maximum number of valence electrons?

An element ‘M' has 50% of the electrons filled in the 3^rd shell as in the 2^nd shell. The atomic number of ‘M’ is ______.

₁H² is an isotope of hydrogen. In the modern Periodic Table it will ______.

Name the metalloids in the first twenty elements.