Atoms MCQs with Answers

What is true about the number of electrons and protons in a neutral atom?

• A.It has more electrons than protons
• B.It has more protons than electrons
• C.It has the same number of electrons and protons
• D.It has no electrons at all

Quantum numbers for 2p orbitals are _?

• A.n = 2, l = 0
• B.n = 2, l = 1
• C.n = 1, l = 2
• D.n = 2, l = 2

The maximum number of electrons accommodated in d subshell are _?

• A.2
• B.6
• C.10
• D.14

The atoms of same element which have the same atomic number but different mass numbers are known as?

• A.Isotopes
• B.Isobars
• C.Isomers
• D.Isotones

Past Paper MCQ

How many neutrons are present in a hydrogen atom?

• A.2
• B.1
• C.0
• D.3

The p orbital has ?

• A.2 lobes
• B.1 lobe
• C.4 lobes
• D.3 lobes

50P15 is unstable because ?

• A.It is odd-odd nucleus
• B.It is even-even nucleus
• C.It has too many neutrons
• D.It has too many protons

Charge of a proton is?

• A.Positive
• B.Negative
• C.Neutral
• D.Both positive and negative

The atomic mass of aluminium is 27 and its atomic number is 13, the number of neutrons present in aluminium is _?

• A.13
• B.14
• C.27
• D.40

Which of the following is having inert gas configuration? Pb+4, As+3, Zn+2, Ti+4

• A.Pb+4
• B.As+3
• C.Zn+2
• D.Ti+4