Question

The period and group number of element with atomic number 7 are
A) 2,3 B) 2,4 C) 2,5 D) 2,15

Answer 1

Answer:

The period is $2$ and the group number is $15$.

Explanation:

Each row of the Periodic Table of Elements, screams menstruation and represents a new outer shell of electrons. The constituent in each column called a group, have the same weight of electrons in their outer shell, producing them to have similar properties. Groups and periods are two ways of arranging elements in the periodic table. menstruation are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across menstruation. the number of protons in the nucleus of an atom, which is the distinguishing of a chemical element and calculates its place in the periodic table.

Hence, the correct answer is an option (D) $2,15$.

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