Q: Which has valency equal to zero?

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Correct.

if it didn't equal zero then what else would it equal

A scalene triangle has zero equal sides.

When the numerator of any expression or fraction is zero then the result is zero because zero divided by any number is always equal to zero.

Anything to the power zero is equal to 1 by definition.

Related questions

helium's valency is zero as id does not combine with other elements

The noble gases have the least valency which is zero. It is because thay have a complete shells.

Noble gases were considered elements with zero valency; but today a significant number of noble gases (especially xenon) are known.

the valency of argon is zero(0) because it is a noble gas i.e it does not react to any other element

The outer (valance) ring is full.

In fact an electron has no valency, though it is equal to a -1 (minus one) charged anion like Cl-, having a valency of -1

Zero is equal to zero

Barium is in group 2, so has a valency of 2. Nitrogen is is in group 15, so has a valency of 3. You have to get the total valencies to equal so: Ba3N2. Total valency of Ba=3x2=6. Total valency of N=2x3=6.

noble gases are inert therefore they posses zero valency

Any number to the power zero is equal to 1 - except zero to the power zero, which is undefined. So, if x is not equal to zero, the answer is 1.Any number to the power zero is equal to 1 - except zero to the power zero, which is undefined. So, if x is not equal to zero, the answer is 1.Any number to the power zero is equal to 1 - except zero to the power zero, which is undefined. So, if x is not equal to zero, the answer is 1.Any number to the power zero is equal to 1 - except zero to the power zero, which is undefined. So, if x is not equal to zero, the answer is 1.

Any number multiplied by zero is equal to zero, including zero. Therefore, zero times zero is equal to zero. 0 x 0 = 0

How can a class frequency be equal to zero?