Download App

P-1 Periodic Classification of Element — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Periodic Classification of Element3 Marks
Question
An element has its electron configuration as $2,8,1$. Now answer the following questions:
i. What is the atomic number of this element?
ii. What is the group of this element?
iii. To which period does the element belong?
✓

Answer

i. Atomic number of the element is 11 .
ii. The element belongs to group 1.
iii. The element belongs to period 3 .

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions: [3 M]" from P-1 Periodic Classification of Element→P-1 Periodic Classification of Element — all question types→Science STD 10 question papers→Maharashtra Board STD 10 question papers→Maharashtra Board question paper generator→

Similar questions

Name the reaction which is usually used in the conversion of vegetable oils to fats. Explain the reaction involved in detail. Write a chemical equation to illustrate your answer.
→
If a convex lens of focal length 20 cm and a concave lens of focal length 30 cm are kept in contact with each other, (i) What will be the focal length of the combination? (ii) What will be the power of the combination? (iii) What will be the behaviour of the combination?
→
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
→
Write merits of Mendeleev's periodic table.
→
Geeta observed a white trail at the back of aeroplane in a clear sky to answer the question from this incident given below.
  1. What will be the effect of relative humidity of the air surrounding the plane?
  2. What will be the effect of relative humidity of the air surrounding the plane is low?
  3. When the air is dry and humid?
→
Explain the Structural isomerism term with example.
→

Image
→
A real image is obtained at 30 cm from a convex lens of focal length 7.5 cm. Find the distance of the object from the lens.
→
A 6m long wire made from an alloy, nichrome, is shaped into a coil and given for producing heat. It has a resistance of 24 ohm. Can we get more heat if the wire is cut into half of its original length and shaped into a coil? For getting Energy, the two ends of the wire are connected to a source with a potential difference of 220 V.
→
Give the position, size and nature of image formed by a concave lens when the object is placed:
  1. Anywhere between optical centre and infinity.
  2. At infinit.
→