EASY
10th CBSE
IMPORTANT
Earn 100

Name two elements that have two electrons in their outermost shells.

Important Questions on Periodic Classification Of Elements

EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 10
Name three elements with filled outermost shells.
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 11
Lithium, sodium, potassium are the metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?  
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 11
Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 12
In the modern periodic table, which are the metals among the first ten elements?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 13

By considering their position in the periodic table, which one of the following elements would you expect to have maximum metallic characteristics.

Ga, Ge, As, Se, Be

EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 14
Which of the following statements is not a correct statement about the trends when going from left to right across the period of the periodic table?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 15
Element X forms a chloride with the formula XCl2 which is a solid with high melting point. X would most likely be in the same group pf periodic table as:
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 5 - Periodic Classification Of Elements>NCERT Section>Q 16
Which element has two shells, both of which are completely filled with two electrons?