Question

There are seventeen non-metals in the periodic table. Unlike metals in the same period, they have higher:

a.) Atomic number
b.) Atomic size
c.) Electropositivity
d.) All of the above

Answer 1

answer : a.) Atomic number

explanation:

in the period metallic nature increases and non-metallic nature decreases.

metals are more electropositive than non-metals . so option C) is wrong

in a period from left to right atomic size decrease . so option b ) is wrong .

so ultimate answer is a)

example :

2nd period elements :

Li , Be , B , C , N , O , F , Ne

here Li is perfectly metal and F is perfectly non-metal .

metallic character decreases from left to rght and non-metallic character increases