true

Take Class 10 Tuition from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

Periodic classification of Elements

Sashank

24/12/2018 0 0

How many elements known to us?

Ans: 118

Who gave the theory of triads?

Ans: Dobereiner

Who gave Octave theory?

Ans: Newlands

What is the drawback of Dobereiner traits?

Only three triads were recognised from the elements known at a time.

What is the drawback of Newlands Octave theory?

Ans: It applied to calcium, properties of newly discovered elements didn't fit into the law of Octave.

In Mendeleev periodic table how many periods and groups are there?

Ans: 7 periods and eight groups.

0 Like 0 Dislike

Follow 2

Other Lessons for You

तृतीया विभक्ति (उपपद विभक्ति )

साथ के योग में विभक्ति साकम्, सार्धम्, समम् के साथ तृतीया विभक्ति होती है नक्षत्रेण सह चन्द्रमा उदेति = ताराओं के साथ चन्द्रमा उगता है ।अन्यया भाषया सह संस्कृतमपि अवश्यं शिक्षेयुः...

Arun

0 0

उपपद विभक्ति (सप्तमी)

सप्तमी विभक्ति (उपपद विभक्ति) साधुनिपुणाभ्‍यामर्चायां सप्‍तम्‍यप्रते:।। 2/3/43 ।।( अधिकरण कारकम्/सप्तमी विभक्ति ) साधु, निपुण च शब्‍दौ यदा पूजा (आदर) अर्थे भवत: तदा...

Arun

0 0

Stressed and Unstressed Words in a Sentence

STRESSED AND UNSTRESSED WORDS IN A SENTENCE While speaking, sometimes we give more emphasis to certain words in a sentence or say them louder than others, with extra force. They are called stressed words....

Tanmoy Saha

1 0

Find The Length Of 3rd Side Of The Triangle (Important)

Question: Solution: (2a)^2 + b^2 = 18^24a^2+b^2 = 324(2b)^2+a^2 = 24^24b^2+a^2 = 576a^2+b^2 = 900/5 = 180a^2 = 48 b^2 =...

Sujoy Das

2 0

दृश् (पश्य्) (देखना) धातुः – परस्मैपदी

(लट् लकार: Present Tense) एकवचनम् द्विवचनम् बहुवचनम् प्रथमपुरुष: पश्यति पश्यतः पश्यन्ति मध्‍यमपुरुष: पश्यसि पश्यथः पश्यथ उत्‍तमपुरुष: पश्यामि पश्यावः पश्यामः ...

Arun

0 0

Find Class 10 Tuition near you

Online Tuition Class 10

Looking for Class 10 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Class 10 Tuition Questions

What is the English term of the word 'majboor' in Hindi?

11 Answers

How much can I charge for teaching 10th CBSE Mathematics?

65 Answers

Are tuitions mandatory in the class 10 CBSE to score a 98%?

6 Answers

What is Algebraic K-Theory?

7 Answers

Why paper catches fire when a convex lens is used to ficus sunlight?

5 Answers

Looking for Class 10 Tuition Classes?

The best tutors for Class 10 Tuition Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Take Class 10 Tuition with the Best Tutors

The best Tutors for Class 10 Tuition Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.