An element \( X \) has 7 electrons in its \( \mathrm{L} \) shell. What is true about the element... VIDEO
An element \( X \) has 7 electrons in its \( \mathrm{L} \) shell. What is true about the element X?
[NTSE 2013]
(i) It belongs to period of 9 of modern periodic table.
(ii) Its atom contains 9 protons.
(iii) It has a valency of 7
(iv) Its atoms can accept an electron to acquire noble gas configuration.
a. (i) and (ii)
b. (ii) and (iii)
c. (iii) and (iv)
d. (ii) and (iv)
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