ISOLATION OF ELEMENTS - L10

Isolation Of Boron

A natural atom of an element has 2K,8L, 9M and 2N electrons .The atomic number of element is :

A neutral atom of an element has two K, eight L, nine M and two N electrons then electronic configuration of the element is "________"

A natural atom of an element has 2K,8L, 9M and 2N electrons .The atomic number of element is : The valency of element is

If A = {(a, b, c, l, m, n}, then the maximum number of elements in any relation on A, is

The element out of L. M, Q. R showing maximum metallic character is

An isolated metal sphere whose diameter is 10 cm has a potential of 8000 voits . What is the energy density at the surface of the sphere?

Assertion : Sympatric species are geographically isolated. Reason : Sympatric species are reproductively isolated.