A. Hydrogen
B. Helium
C. Nitrogen
D. Carbon
Submitted by: Ashfaque Ali Khoso
Related Mcqs:
- The position of an element in the Periodic Table is determined by its __________ number?
A. Electron
B. Proton
C. Neutron
D. None of these - In whole Periodic Table which element Is Most Reducing Agent ?
A. Chlorine
B. lithium
C. Helium
D. NeonSubmitted by: Ali Jan
- The horizontal rows of the periodic table are called ______?
A. Groups
B. Periods
C. Sets
D. MatricesSubmitted by: Danish Balani
- What are Columns in Periodic table called?
A. Period
B. Group
C. Verticals
D. PerpendicularsSubmitted by: Malik Asghar Hussain
- What are rows in Periodic table called?
A. Period
B. Group
C. Verticals
D. PerpendicularsSubmitted by: Malik Asghar Hussain
- How many rows and columns are in the modern Periodic Table?
A. 18 columns and 7 rows
B. 12 columns and 9 rows
C. 7 columns and 18 rows
D. 25 columns and 15 rowsSubmitted by: Malik Asghar Hussain
- Which are the only two elements on the periodic table that are liquid at room temperature?
A. Mercury and Bromine
B. Carbon and helium
C. Nitrogen and Hydrogen
D. Oxygen and NeonSubmitted by: Ashfaque Ali Khoso
- Of the six noble gases in the periodic table, which is the lightest?
A. Nitrogen
B. Hydrogen
C. Helium
D. OxygenSubmitted by: Ashfaque Ali Khoso
- How many elements are in modern periodic table?
A. 118
B. 181
C. 108
D. 188Submitted by: M.Muzammil
- Which of the following letter does not represent in periodic table?
A. X
B. K
C. J
D. NSubmitted by: Munwar Ali Sohu