Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
General Knowledge
»
Chemistry
The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 1st group and the 4th period?
21
17
19
9
Correct Answer:
19
← Previous Question
Next Question→
More Questions from
Chemistry
Atomic number of which of the following elements is greater than that of Iodine
Trinitrotoluene is
Iodex, a pain relief balm, has the smell of __________ .
Which of the following is usually not an airpollutant?
Which among the following is white phosphorus?
Alkali metals can
Atomic number of which of the following elements is greater than that of Zinc
_______________ of a material is defined as the minimum amount of the work necessary to remove a free electron from the surface of the material.
Decane has how many hydrogen atoms?
Atoms of same element having different mass numbers are called__________
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments