Home / Aptitude Tests / Chemistry / An element X has ele...
An element X has electron configuration 1s2 2s

An element X has electron configuration 1s2 2s2 2p6 3s2 3p5. Which of the following statements is correct about the element?

A.

lt has a completely filled p-orbital

B.

lt has 5 electrons in its outermost shell.

C.

lt belongs to group ll on the periodic table

D.

lt is a halogen

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

See all Chemistry questions & answers
See more JAMB questions & answers
Similar Questions

Oxygen is absent in? ...

What is the mass of 6.02 x 1024 atoms of magnesium? [Mg = 24, Avogadro constant = 6.02 x 1023 atoms ...

Electrons enter into orbitals in order of increasing energy as exemplified by? ...

30 cm3 of 0.1 M Al (NO3)3 SOLUTION IS RECTED WITH 100cm3 of 0.15M of NaOH solution. Which reactant i...

What is the atomic number of Hassium? ...

In which of the following is the oxidation number of sulphur equal to -2? ...

What is the change in oxidation number of manganes in the reaction represented by the following equa...

Which of the following raw materials is used in the plastic industry? ...

Which of the following is an ore of aluminium? ...

The number of grammes of potassium hydroxide in 250cm3 of one molar solution is? (K = 39, O = 16, H...

Aptitude Tests

Typing Speed and Accuracy Test

Logical Reasoning Questions and Answers

Microsoft Office Questions and Answers

Abstract Reasoning Questions and Answers

Puzzles Questions and Answers

Personality Test

Data Interpretation Questions and Answers

Situational Judgement Questions and Answers

Spatial Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Verbal Reasoning Questions and Answers

Quantitative Reasoning Questions and Answers

See all →