Download App

Study of the First Element - Hydrogen — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYStudy of the First Element - Hydrogen2 Marks
Question
Justify the position of hydrogen in the periodic table.
✓

Answer

Hydrogen is the first element in the periodic table. Its atomic number is 1, and it has only one electron in its valence shell. So, it belongs to the first group and the first period of the periodic table.

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 "[2 Mark Question Answer]" from Study of the First Element - Hydrogen→Study of the First Element - Hydrogen — all question types→CHEMISTRY STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

How is hydrogen prepared industrially by Bosch Process?
→
We mix iron filings with sulphur and grind it, and we heat the mixture, a chemical change takes place. Using the above example explain the chemical change.
→
State two merits of Mendeleev’s periodic table over previous attempts of classification of the elements.
→
What qualitative and quantitative information is conveyed by a symbol?
→
Give reasons for the following:
Mountaineers carry oxygen cylinders with them.
→
Draw a labelled diagram to show how cathode rays are produced.
→
Mention the basic tendency of an atom which makes it combine with other atoms
→
State (i) the three variables for gas laws and (ii) SI units of these variables.
→
Write the basic radicals and acidic radicals of the following andthen write the chemical formulae of these compounds.
Barium sulphate
→
Give a chemical test to distinguish between the following gases.
$NH_3$​​​​​​​ and $SO_2​​​​​​​$​​​​​​​
→