Q.1. In the periodic table, alkali metals are placed in the group :

Q.2. An alkaline earth metal is :

Q.3. The number of electrons present in the valence shell of halogen is :

Q.4. If an element A belongs to period 3 and Group II then it will have :

Q.5. On moving from left to right across a period of the periodic table, the atomic size :

Q.6. On moving from left to right across a period of the periodic table, the non-metallic character of the elements :

Q.7. On moving from left to right across a period of the periodic table, the ionization potential :

Q.8. Ionisation potential increases over a period from left to right because the :

Q.9. On moving from left to right across a period of the periodic table, the electron affinity of the elements in groups 1 to 7 :

Q.10. An element in period 3 whose electron affinity is zero :

Q.11. Among the period 2 elements, the element which has high electron affinity is :

Q.12. On moving from left to right across a period of the periodic table, the electronegativity :

Q.13. Among the elements given below, the element with the least electronegativity is :

Q.14. Which of the following would weigh the least ?

Q.15. An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is :

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

Gurukul Academy,Indira Nagar,Lucknow

2 shells and 3 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

St. Dominic Saivio College, Lucknow

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

St. Dominic Savio College /Lucknow

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

St. dominic Savio college, lucknow

2 shells and 3 valence electrons

Atomic radius increases and nuclear charge increases

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

City Montessori School GN-1 - Lucknow

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

KRISTU JYOTI VIDYA NIKETAN ,CHANGANACHERRY

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

6·02 × 10^23 atoms of carbon

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

St johns school firozabad

3 shells and 2 valence electrons

Atomic radius increases and nuclear charge decreases

6·02 × 10^23 atoms of carbon

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

3 shells and 2 valence electrons

Atomic radius decreases and nuclear charge increases

22·4 litres of oxygen gas at 1 atmospheric pressure and 273 K