The first member of a group of elements in the s an dp block differs from the rest of the family in chemical behaviour. Write any one reason for this.

Carbon is the first member of group 14 in the periodic table, Why does carbon differ from the rest of the members of bts group?

The atomic number of an element is 19. Write any one characteristic of the block to which the element belongs.

Carbon is the first member of group 14 in the periodic table, Write any two anomalous properties of carbon

Some information related to the elements of the p block in the 17th group of the periodic table are given in the table below. Complete the able and analyse the following questions. a) What is the family name of element belonging to 17th group? b) what is their common valency? c) Which element has the highest electronegativity? d) Which element has highest ionisation energy? e) List out the name and chemical formula of the compounds formed by this elements with s block elements. '(##VPU_TTT_CHE_X_P01_C01_E02_002_Q01##)'

Two students were analysing the electronic configurations of the first 30 elements of the Periodic Table as part of an assignment. They found that two elements showed difference from other twenty eight elements. Write their electronic configurations.

The chemistry of Boron is different from that of other members of the same group. Mention any two differences and give reason.

The substance which can accept electrons is a Lewis acid. 'BCl_3, BF_3' and 'BBr_3' are Lewis acids. a. Arrange the above Lewis acids in the increasing,order of their acid strength. b. Give reason for this order of acidic strength, c. The chemistry of boron is different from that of other members of the same group. Mention any two differences and give reason.

The outermost electronic configuration of A is 2s^2 2p^2 (Symbols are not real) a) Find the group number, block of this element. b) Write the chemical formula of the compound obtained by the reaction of A and chlorine. c) Write down the complete subshell electronic configuration of the element coming just below A in the same group of the periodic table?

2. Some d - block elements are given below: (Cr,Mn,Fe,Cos,Ni) a. Identify the element which shows maximum paramagnetic behaviour: b. Give reason for the highest paramagnetic property of that element. c. When two electrons, are Iost from each atom, is there any change:in' magnetic properties of - each. Explain?