Question

pound electron Irom an isolated gaseous
atom is called
SELECT PROPER ANSWER FROM THE GIVEN ALTERNATIVES
1. Due to screening effect, the attractive force between the nucleus and outermost
electron
a) decreases
b) increases c) constant d) not affected
2. The size of anion is always than parent atom.
a) greater b) smaller
c) equal
d) none of them
3. The size of cation is always than parent atom
a) greater b) smaller c) equal d) none of them
4. The f-block elements are also called as
a) transition elements
b) alkali metals
c) alkaline earth metals
d) inner transition elements
5. The energy released due to addition of extra electron to an isolated gaseous atom is
called
a) lattice energy b) ionization energy c) extra energy d) electron affinity
6. In the periodic table atomic radii
a) increases along a period
b) decreases down the group
c) increases down the group
d) not predictable
7. The electronegativity values can be determined by
pH scale d) both (a) and (b)​

Answer 1

Answer:

1.(a) decreases

2.(d) none of them

3.(d) none of them

4.(d) inner transition elements

5.(d) electron affinity

6.(d) not predictable