NEETChemistryp Block Elements (Group 13 & 14)
Which of the following statements are correct? a) The isotope of carbon containing 7 neutrons has natural abundance of 1 . 1 % b) Among the IV A group elements, Sn has the lowest melting point c) Silicon is the 2 nd (by mass) most abundant element in the earth's crust d) Elemental carbon shows the highest electrical resistivity among the 14 group elements
Options
- Aa, c and d only
- Ba, b and c only
- Cb, c and d only
- Da, b, c and d
Correct answer
D. a, b, c and d
Step-by-step solution
a) The isotope of carbon containing 7 neutrons has natural abundance of 1 . 1 % . This statement is correct because the C 6 13 has the natural abundance of 1 . 1 % . b) Among the IV A group elements, Sn has the lowest melting point. This statement is correct because the melting point decreases down the group. c) Silicon is the 2 nd (by mass) most abundant element in the earth's crust. This statement is correct because it has the 27 . 7 % of earth crust. d) Elemental carbon shows the highest electrical resistivi