Question

1. Fill in the blanks.
1. Our body works within the pH range of _______ .
2. ______ is a lustrous non-metal.
3. In periodic table there are _________ groups.
4. The electronic configuration of 2,8,2 is ________ .
5. Atomic size ______ down the group.​

Answer 1

Explanation:

7-7.8

* Our body works within the pH range of 7-7.8. Therefore, we can say that pH of our body is slightly alkaline.

Graphite and iodine are lustrous non metals.

18

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups

Answer 2

Answer:

1. 7-7.8,,,, 7-7.8* Our body works within the pH range of 7-7.8. Therefore, we can say that pH of our body is slightly alkaline.
2. Diamond and iodine are two exceptions and are lustrous non-metal.
3. 18,,, 18In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 2 and 3) are not numbered.
4. Magnesium has the electronic configuration 2,8,2.
5. The atomic radius usually increases while going down a group due to the addition of a new energy level (shell). So,The atomic size of elements present in a group increases with increasing atomic number.

Explanation:

н๏pε ¡т нεℓpε∂ ყ๏น