What are the atomic numbers of elements whose outermost electrons are represented by
(a) 3s¹ (b) 2p³ and (c) 3p⁵?

Solution

(a) 1s²2s²2p⁶3s¹;
Atomic number of the element is 11.
(b) 1s²2s²2p³;
Atomic number of the element is 7.
(c) 1s²2s²2p⁶3s²3p⁵;
Atomic number of the element is 17.

Some More Questions From Structure of Atom Chapter

Name the fundamental particles which constitute an atom.

What is an Electron?

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Structure Of Atom

What are the atomic numbers of elements whose outermost electrons are represented by
(a) 3s¹ (b) 2p³ and (c) 3p⁵?

Some More Questions From Structure of Atom Chapter

Name the fundamental particles which constitute an atom.

What is an Electron?

What is a proton?

Who discovered neutron?

What is a neutron?

What is the name of the remaining part of atom except outer orbit?

Name the particles which determine the mass of an element.

What are α-particles?

Why were neutrons discovered very late?

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

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NCERT Sample Papers

Entrance Exams Preparation

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Structure Of Atom

What are the atomic numbers of elements whose outermost electrons are represented by(a) 3s1 (b) 2p3 and (c) 3p5 ?

Some More Questions From Structure of Atom Chapter

Name the fundamental particles which constitute an atom.

What is an Electron?

What is a proton?

Who discovered neutron?

What is a neutron?

What is the name of the remaining part of atom except outer orbit?

Name the particles which determine the mass of an element.

What are α-particles?

Why were neutrons discovered very late?

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

What are the atomic numbers of elements whose outermost electrons are represented by
(a) 3s¹ (b) 2p³ and (c) 3p⁵?