Periodic Table Class 10th

What is the general trend of atomic size as you move from left to right across a period in the periodic table?

• Atomic size decreases

• Atomic size remains constant

• Atomic size fluctuates

• Atomic size increases

Name two properties that are characteristic of metals.

• Dull and low electrical conductivity

• Brittle and low melting point

• Shiny and high electrical conductivity

• Opaque and high thermal conductivity

Which group of elements are known as alkali metals?

• Group 7 elements

• Group 2 elements

• Transition metals

• Group 1 elements

How many groups are there in the modern periodic table?

• 8

• 12

• 18

• 20

What is the name given to the horizontal rows in the periodic table?

• periods

• divisions

• blocks

• groups

What is the name given to the vertical columns in the periodic table?

• periods

• rows

• blocks

• groups

What is the trend in reactivity of alkali metals as you move down the group?

• Reactivity fluctuates

• Reactivity increases

• Reactivity remains constant

• Reactivity decreases

Which group of elements are known as noble gases?

• Group 14 elements

• Group 8 elements

• Group 10 elements

• Group 18 elements

What is the trend in electronegativity as you move from left to right across a period in the periodic table?

• Electronegativity increases

• Electronegativity decreases

• Electronegativity remains constant

• Electronegativity fluctuates

Name one property that is characteristic of non-metals.

• High melting point

• Good conductors of heat and electricity

• Shiny appearance

• Poor conductors of heat and electricity