Advertisements
Advertisements
Question
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with 6 valence electrons
Advertisements
Solution
Atomic number 8
Electronic configuration (8): 2,6
APPEARS IN
RELATED QUESTIONS
Write true or false for the following statement
An atom on the whole has a positive charge.
What are the two main features of Rutherford’s atomic model?
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number?
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Isotopes of hydrogen [11H, 21H, 31H]
Elements X, Y, Z have atomic numbers 6, 9 and 12 respectively. Which one:
- forms anion – negative ion;
- forms cation – positive ion;
- has 4 electrons in the outermost orbit. [Y, Z, X]
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
The Atomic number of an element is 20. It has ______ valence electrons.
K and L shells can accommodate a maximum of 2 and 8 electrons respectively.
