Question

1. The group VII elements are commonly called

(a). noble gases (b). diatomic elements (c). halogens (d). halogens
2. which of the following is a D – block element
(a). Cl (b). K (c). Na (d). Mn
3. The group O elements are classified as
(a). inert gases (b). active gases (c). alkali elements (d). metalloids
4. Scandium is a transition element because…..
(a). its hard and malleable (b). its hard and ductile (c). its ductile and malleable
(d). it has its d-orbital partially filled.
5. In the periodic table, which of the following properties decreases across the period
(a). electronegativity (b). electron affinity (c). atomic size (d). first ionization energy
6. Which of the following families of elements has the greatest atomic volume across a period?
(a). noble gases (b). alkaline-earth metals (c). alkali-earth metals (d). alkali metals
7. Xenon has a higher I.E than nitrogen because …
(a). oxygen has a lower shielding effect (b). Xenon has a bigger atomic size
(c). Xenon has an inert gas structure (d). Xenon has a higher atomization energy
8. which electron in the following orbitals will experience the greatest nuclear attraction?
(a). 1s electron of He (b). 1s electron of K (c). 1s electron of hydrogen (d). 2s electron of carbon
9. The following electron configuration of 10Ne, 1s3 2s2 2p5 violates
(a). Pauli’s exclusion principle (b). Hund’s rule (c). Aufbau’s principle
(d). both Aufbau’s principle and Hund’s rule
10. The greater the screening effect, the …..
(a). smaller the atomic size (b). higher the effective nuclear charge (c). lower the nuclear charge
(d). higher the nuclear attraction

Answer 1

Step-by-step explanation:

1. (c) halogens

2. (d) Mn

3. (a) inert gases

4. (d) it has its d-orbital partially filled.

5. (c) atomic size

6. (a) noble gases

7. (b) Xenon has a bigger atomic size

8. (a) 1s electron of He

9. (a) Pauli's exclusion principle

10. (a) smaller the atomic size