MEDIUM
Stage 1 & 2
IMPORTANT
Earn 100

Eka aluminium was replaced by which element later on

50% studentsanswered this correctly

Important Questions on Periodic Classification of Elements

EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 22
The element with atomic number 8 resembles the element having an atomic number
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 23
Which element is not a noble gas?
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 24
Which of the following periodic property generally decreases along a period?
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 25
Chloride and potassium ions are isoelectronic. Then