Tag: study of the first element - hydrogen

Questions Related to study of the first element - hydrogen

________ element has one electron in the outermost shell and attains duplet configuration after accepting one more electron and attains stability.

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. Helium

  2. Hydrogen

  3. Lithium

  4. Carbon

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Correct Option: B
Explanation:

Hydrogen has ${ 1e }^{ - }$ in outermost shell, in order to achieve stability either ${ e }^{ - }$ to be removed or added. When added it acquires a stable configuration forming duplet.

Hydrogen is the ________ element on the earth.

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. most abundant

  2. heaviest

  3. lightest

  4. none of these

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Correct Option: C
Explanation:

$H$ is the lightest element on earth as there is only $1$ proton and ${ 1e }^{ - }$. All the other elements have more than 1 electrons and protons along with neutrons.

Assertion (A): Hydrogen shows resemblance with alkali metals as well as halogens.
Reason (R): Hydrogen exists in atomic form only at high temperature.

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. Both A and R are true and R is the correct explanation of A

  2. Both A and R are true but R is not a correct explanation of A

  3. A is true but R is false

  4. A is false but R is true

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Correct Option: B
Explanation:

Hydrogen is having similarities with alkali metals and halogens any many properties and hydrogen exists In atomic form in high temperature but the reason not satisfy the assertion so assertion and reason are true.

In which of the following properties listed below, hydrogen does not show similarity with halogens?

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. Nature of the oxide

  2. Electropositive character

  3. Combination with alkali metals

  4. Atomicity

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Correct Option: B

Hydrogen does not combine with:

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. antimony

  2. sodium

  3. bismuth

  4. helium

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Correct Option: D
Explanation:

As helium is inert gas so hydrogen does not make any product with $He$.

In which property listed below hydrogen does not resemble alkali metals?

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. Tendency to form cation

  2. Nature of oxide

  3. Combination with halogens

  4. Reducing character

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Correct Option: B
Explanation:

Hydrogen shows all other properties like alkali metals (form cation, combine with halogens, reducing nature) but nature of oxide is different than metals.

The characteristics of hydrogen resemble the elements of__as well as__groups.

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. IIA and VA

  2. IIIA and VIA

  3. IIA and VIA

  4. IA and VIIA

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Correct Option: D
Explanation:

Because hydrogen has ${ 1e }^{ - }$ in its outermost shell which is ready to be donated like that a group $1A$ (alkali metals). Also hydrogen can accept an ${ e }^{ - }$ to from ${ H }^{ - }$ having ${ 2e }^{ - }$ in outer shell which is stable this resembles to $VIIA$ group (Halogen family), as they also require only one ${ e }^{ - }$ to fulfill their incomplete octet.

In all its properties, hydrogen resembles:

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. alkali metals only

  2. halogens only

  3. both alkali metals and halogens

  4. neither alkali metals nor halogens

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Correct Option: C
Explanation:

Hydrogen resembles alkali metals and halogens in all its properties. The electronic configuration of hydrogen, alkali metals and halogens are $1s^1,  ns^1$ and $ns^2, np^3$ respectively. All are short by one electron from noble gas configuration. Hence, all have similar chemical properties.

Hydrogen loses its electron to form $H^+$. In this respect, it resembles:

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. halogens

  2. alkali metals

  3. transition element

  4. alkaline earth metals

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Correct Option: B
Explanation:

Alkali metals have one electron present in their outer shell in group I so after losing one electron they become stable ions similarly hydrogen has lone electron in its shell after losing it shares the same character as alkali metal group.

The element having no neutron in the nucleus of its atom is:

chemistry study of the first element - hydrogen position of hydrogen in the periodic table hydrogen in periodic table trends in groups and periods

  1. hydrogen

  2. nitrogen

  3. helium

  4. boron

Show answer
Correct Option: A
Explanation:

Hydrogen has atomic number 1. It has monatomic form is the most abundant chemical substance and it has single proton and zero neutrons. It exists in diatomic form.