A. 1
B. 2
C. 14
D. 18
Submitted by: Muhammad Ali Kunbhar
Related Mcqs:
- The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?
A. Dipole-dipole forces
B. Ion dipole-dipole forces
C. London dispersion forces
D. Debye forces - Melting points of VII-A group elements down the group ____________________?
A. Increase
B. Decrease
C. Remain constant
D. No regular trend - Which of the p-block elements are not representative elements ?
A. Alkali metals (I-A)
B. Group-14 elements (IV-A)
C. Group-18 elements (VIII-A)
D. Halogens (VII-A) - Introduction of nitro group in a molecule is called___________________?
A. nitration
B. halogenation
C. sulphonation
D. amination - Seventh period contains _________________ normal elements ?
A. 2
B. 4
C. 6
D. 8 - Elements of group IA IIA are _________________?
A. Electronegative
B. Electropositive
C. Neutral
D. IA is electropositive while IIA is electronegative - In which of the following pairs are elements belonging to the same group ?
A. Boron & Beryllium
B. Nitrogen & Phosphorous
C. Magnesium & Aluminium
D. Gallium & Helium - Boron is non metal while other elements of IIIA group are metals. This is because______________?
A. it has small size
B. it has high nuclear charge
C. it forms molecular addition compounds
D. all of the above - All the elements in group VIA are ___________________ in nature?
A. hygroscopic
B. metals
C. polymeric
D. all of above - Which of the following represents the correct electronic configuration of VII A group elements in the ground state ?
A. ns2p2
B. ns2p4
C. ns2p5
D. ns2p6
