Question

1) Periodie placement of these elements in the periodic table is given
A) Nobel gases B) Alkali metal C) Halogen DActinide​

Answer 1

Answer:

Non-metals are placed in the upper right corner of the periodic table. i. The horizontal rows of elements in a periodic table are called periods. There are seven periods in the long form of the periodic table.

Answer 2

Explanation:

A) nobel gas -18(VIIIA) group are shown at the left corner of the table

B) Alkali metal - 1(IA) group are shown at right starting of the table

c) Halogen-17(VIIA) group are shown at left before the nobel gases

d) Actinides- 5f elements are shown separately below the periodic table