Horizontal rows are termed as periods. There are 7 periods in Periodic Table.
No. Xenon is not the first period of the periodic table. It is placed in the 5th period of periodic table.
Helium is in the first period of the periodic table.
Periods are the horizontal rows in the periodic table of Mendeleev; this table contain 7 periods.
Period 3 in the periodic table contains 18 electrons in total.
No , Iodine is placed in period-5 of the periodic table.
Copper is located in period 4 of the periodic table.
Helium is in the first period of the periodic table.
No. Xenon is not the first period of the periodic table. It is placed in the 5th period of periodic table.
Periods are the horizontal rows in the periodic table of Mendeleev; this table contain 7 periods.
There are 32 elements in the 6th period of the periodic table.
Period 3 in the periodic table contains 18 electrons in total.
Argon is in the third period of the modern periodic table.
Oxygen is in Period 2 , Group 16 ( VI A) of periodic table
There are 4 non-metals in the third period of the periodic table (Phosphorous, sulfur, chlorine, and argon)
There are 8 elements in the third period of periodic table. The elements belong to group-1,2,13,14,15,16,17 and 18
Caesium is a Period 6 element.
No , Iodine is placed in period-5 of the periodic table.