Question

Which of the following trends can be observed when moving down a column in the Periodic Table?
Question 1 options:

A. The atomic mass decreases.

B. The number of valence electrons remains the same.

C. The number of orbitals decreases.

D. The possible number of bonds formed decreases.

Answer 1

Answer:

option (b) is correct

Explanation:

hope it help u

Answer 2

B. the number of valence electrons remains the same when moving down a column in Periodic table.

Explanation:

All the elements that has ever been discovered by scientists, are organized in an orderly way in the modern periodic table. The modern periodic table arranges all the elements according to atomic number of elements.

Atomic Number: The number of electrons is equal to number of protons and that is the atomic number of element.

Mass number: Sum of number of neutrons and number of protons in the nucleus is called the atomic mass of element.

• Atomic mass increases when going down the group.
• Number of valence electrons remain the same when going down the group.
• As the number of electrons increases down the group, number of orbitals also increase.
• And number of bonds formed also increases when going down the group.