Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
233 views
in Chemistry by (30.7k points)
closed by

The above shown image depicts Mendeleev's Periodic Table. The success of Mendeleev's prediction led chemists to not only accept his Periodic Table but also recognise him, as the originator of the concept on which it is based. Many incidents provided the convincing evidence for both the correctness and usefulness of Mendeleev's Periodic Table. Now, refer the above periodic table and answer.

1. Which element shows the properties similar to of Eka-Aluminium as predicted by Mendeleev?

a. scandium

b. gallium

c. germanium

d. All the options

2. What was the atomic mass of Eka-Aluminium as predicted by Mendeleev?

a. 68

b. 69.7

c. 71

d. 69.8

3. Was the Mendeleev's Periodic Table complete?

a. YES

b. NO

4. Which letter was used in the formula for oxides and hydrides at the top of the columns for the representation of elements in the groups, in Mendeleev's Periodic Table ?

a. P

b. Q

c. R

d. G

5. There were a few instances where Mendeleev had to place an element with a slightly greater atomic mass before an element with a slightly lower atomic mass. State true or false.

a. TRUE

b. FALSE

1 Answer

+1 vote
by (30.6k points)
selected by
 
Best answer

1. b. gallium

2. a. 68

3. b. NO

4. c. R

5. a. TRUE

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...