PERIODIC CLASSIFICATION

The number of periods and groups in the

periodic table are______.

• 5,16

• 7,18

• 6,17

• 7,16

_____ group contains the member of

halogen family.

• 18th

• 15th

• 17th

• 16th

The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in

• 13th

• 14th

• 15th

• 16th

Atoms of elements in group 1 have

• one electron in its outermost orbit

• two electrons in its outermost orbit

• three electrons in its outermost orbit

• four electrons in its outermost orbit

The period number tells us...

• How many electron shells an element has

• How many electrons are in the most outer shell

• The mass number

• valency

According to the periodic Law of elements, the variation in properties of elements is related to their

• atomic mass

• atomic number

• mass of proton

• mass of neutron

Tags

NGSS.HS-PS1-2

Noble gases are present in-------- group

• 13th

• 15th

• 17th

• 18th

An element with atomic number 112 is named as------

• ununnilium

• ununoctium

• ununbium

• unununium

The general electronic configuration of d-block elements is ---------

• (n-1)d^1-10 ns¹

• (n-1)d^1-10 ns²

• (n-1)d^1-10 ns^1-2

• (n-1)d^1-10 ns⁰

Tags

NGSS.HS-PS1-1

The first inner transistion series begins from------- group

• 5th

• 4th

• 6th

• 7th